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About GTJ
Welcome to GemTreeJapan!
GemTreeJapan is a gemstone manufacturer and loose stone specialty store that sells high-quality gemstones with its own original cuts mainly via the internet.
When shopping online, you may be worried about quality and cut, but we offer a wide selection of carefully selected, high-quality gemstones with world-class cuts, so even first-time customers can shop with confidence. Thanks to you, we have received feedback from customers who have purchased from us, such as "The sparkle is amazing in person," "I wish I had known about this sooner," and "My eye for cuts has become so refined that I can't buy from other stores." Thank you.
Come experience the excitement of holding a GTJ jewel in your hands and seeing it in person.
YouTube and social media
YouTube Channel
https://youtube.com/@GemTreeJapan
Twitter
https://twitter.com/gemtree_japan
Instagram
https://instagram.com/gemtreejapan
Official LINE
https://lin.ee/87ZCmrY
GTJ Shops

Old Stock 1ct UP Ruby Present
本日5/16(金)終了
3万円以上のお買い物で
オールドストックの
ビルマ産ルビー
1ctアップカボションを
プレゼント
オールドストック大放出セールにあわせて、群馬オフィスに眠っていたビルマ産ルビーの1ctアップのオーバルカボションを、単品でも複数でも3万円以上のお買い物をしてくださった方に1石プレゼントいたします。
最も市場価値の高い産地と言われる貴重なビルマ産ルビーをぜひお好きな作品と一緒に手にしてください。
ルビーの数量が無くなり次第キャンペーン終了となりますので、ご了承いただければと思います。
GTJ masterpiece collection
オールドストック大放出セール
群馬オフィスに眠っていた過去作品を大放出スペシャルプライスにてご紹介いたします。
過去カッター作品や今後作るか分からない貴重な作品を、超お得なこの機会にぜひ手にしてください。
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Milky Amethyst 36.028ct / Brazil
Regular price ¥81,000Regular priceUnit price per¥189,000Sale price ¥81,000Sale -
Fluorite 68.26ct / U.S.A.
Regular price ¥126,000Regular priceUnit price per¥369,000Sale price ¥126,000Sale -
Jelly Opal 4.522ct / Australia
Regular price ¥27,000Regular priceUnit price per¥66,600Sale price ¥27,000Sale -
Kunzite 16.29ct / Brazil
Regular price ¥66,600Regular priceUnit price per¥147,000Sale price ¥66,600Sale -
Kunzite 16.555ct / Brazil
Regular price ¥90,000Regular priceUnit price per¥234,000Sale price ¥90,000Sale -
Citrine 25.73ct / Brazil
Regular price ¥39,600Regular priceUnit price per¥126,000Sale price ¥39,600Sale -
Sold out
Citrine 22.61ct / Brazil
Regular price ¥36,900Regular priceUnit price per¥99,900Sale price ¥36,900Sold out -
Quartz (Citrine) 12.26ct
Regular price ¥29,700Regular priceUnit price per¥66,600Sale price ¥29,700Sale -
Rose Quartz 39.347ct / Brazil
Regular price ¥37,800Regular priceUnit price per¥114,000Sale price ¥37,800Sale -
Lemon Quartz 52.66ct / Brazil
Regular price ¥39,600Regular priceUnit price per¥90,000Sale price ¥39,600Sale -
Smokey Quartz 19.50ct
Regular price ¥42,300Regular priceUnit price per¥99,900Sale price ¥42,300Sale -
Sale
Blue Topaz 24.577ct
Regular price ¥99,900Regular priceUnit price per¥252,000Sale price ¥99,900Sale -
Large trilliant with cube cuts around the table ★ Goshenite 10.273ct Geo-chan's work
Regular price ¥99,900Regular priceUnit price per¥270,000Sale price ¥99,900Sale -
Sale
Lemon Quartz 40.15ct
Regular price ¥29,700Regular priceUnit price per¥69,300Sale price ¥29,700Sale -
Sale
Lemon Quartz 34.27ct
Regular price ¥36,900Regular priceUnit price per¥81,000Sale price ¥36,900Sale -
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Lemon Quartz 34.18ct
Regular price ¥29,700Regular priceUnit price per¥69,300Sale price ¥29,700Sale -
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Lemon Quartz 67.21ct
Regular price ¥49,500Regular priceUnit price per¥135,000Sale price ¥49,500Sale -
Orthoclase 18.793ct ★ A full cube in a size approaching 20ct
Regular price ¥114,000Regular priceUnit price per¥378,000Sale price ¥114,000Sale -
Orthoclase 18.793ct ★ A full cube in a size approaching 20ct
Regular price ¥54,000Regular priceUnit price per¥135,000Sale price ¥54,000Sale -
Iolite 10.316ct / Sri Lanka
Regular price ¥126,000Regular priceUnit price per¥378,000Sale price ¥126,000Sale -
Prehnite 7.281ct / Australia
Regular price ¥31,200Regular priceUnit price per¥69,300Sale price ¥31,200Sale -
Prehnite 9.601ct / Australia
Regular price ¥39,600Regular priceUnit price per¥89,100Sale price ¥39,600Sale -
Prehnite 10.108ct / Australia
Regular price ¥45,000Regular priceUnit price per¥114,000Sale price ¥45,000Sale -
Tanzanite 16.158ct / Tanzania
Regular price ¥29,700Regular priceUnit price per¥81,000Sale price ¥29,700Sale -
Peridot 19.42ct / Pakistan
Regular price ¥27,000Regular priceUnit price per¥66,600Sale price ¥27,000Sale
GTJ Staff Nori's Blog
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2025.5.16 ハイアライト(玉滴石)とは?
おはようございます、のりちゃんです。本日の「数分で疲れず楽しく読める、GemTreeJapanブログ!」です。 ~前置き~ 蛍光っていいですよね。紫外線によって色が変わる....のではなく、光っているんですよ。 でも、なんか正しく伝えなきゃいけないね?という事でwikipedia様を見て見たら、ボクの脳みそが拒絶したので、「蛍光っていいですよね!」という所で落ち着きました。 ルビー(ピンクサファイア)やアレキサンドライトはクロムによって赤く蛍光します。スピネルの一部(透明や灰色)は黄色や赤色、緑色に蛍光する事もあります。面白いですよね。 ルビーやアレキサンドライト、ピンク系スピネルが蛍光するのは構成する元素による為、当たり前なので「蛍光するでしょ?凄いでしょ?」のトークセールだけで購入に至るのは注意しましょう。 逆に普段蛍光しない物が蛍光するのは珍しいので、ボク自身も欲しくなります。 ~本題~...
Old Stock Hyalite Opal Huge Sale
産地レポート有り鑑別書付きハンガリー産ハイアライトオパール大放出セール
GemTreeJapanで新産地としてご紹介したハンガリー産ハイアライトオパールを、オールドストック大放出セールの一環としてスペシャルプライスで出品いたします。
市場で見かけることのないハンガリー産の大粒結晶にGTJのこだわりのカットを施した作品をぜひこの機会に手にしてください。
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Hyalite Opal 0.566ct / Hungary
Regular price ¥25,200Regular priceUnit price per¥56,700Sale price ¥25,200Sale -
Hyalite Opal 0.644ct / Hungary
Regular price ¥25,200Regular priceUnit price per¥59,400Sale price ¥25,200Sale -
Hyalite Opal 0.645ct / Hungary
Regular price ¥28,900Regular priceUnit price per¥61,200Sale price ¥28,900Sale -
Hyalite Opal 0.766ct / Hungary
Regular price ¥33,300Regular priceUnit price per¥72,000Sale price ¥33,300Sale -
Hyalite Opal 0.669ct / Hungary
Regular price ¥34,200Regular priceUnit price per¥72,000Sale price ¥34,200Sale -
Hyalite Opal 0.664ct / Hungary
Regular price ¥36,900Regular priceUnit price per¥66,600Sale price ¥36,900Sale -
Hyalite Opal 0.863ct / Hungary
Regular price ¥39,600Regular priceUnit price per¥89,100Sale price ¥39,600Sale -
【お客さま専用】Hyalite Opal 0.836ct / Hungary
Regular price ¥42,300Regular priceUnit price per¥90,000Sale price ¥42,300Sold out -
Hyalite Opal 0.923ct / Hungary
Regular price ¥43,200Regular priceUnit price per¥99,900Sale price ¥43,200Sale -
Hyalite Opal 1.210ct / Hungary
Regular price ¥59,400Regular priceUnit price per¥114,000Sale price ¥59,400Sale -
Hyalite Opal 0.940ct / Hungary
Regular price ¥66,600Regular priceUnit price per¥126,000Sale price ¥66,600Sale -
Hyalite Opal 1.071ct / Hungary
Regular price ¥72,000Regular priceUnit price per¥135,000Sale price ¥72,000Sale -
Hyalite Opal 1.461ct / Hungary
Regular price ¥90,000Regular priceUnit price per¥162,000Sale price ¥90,000Sale -
Hyalite Opal 1.814ct / Hungary
Regular price ¥135,000Regular priceUnit price per¥216,000Sale price ¥135,000Sale -
Hyalite Opal 1.617ct / Hungary
Regular price ¥144,000Regular priceUnit price per¥216,000Sale price ¥144,000Sale
May Gem Stone Pick UP
5月誕生石ピックアップ
5月の誕生石である翡翠を誕生石特別プライスにてご紹介いたします。
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Jadeite 0.754ct / Burma
Regular price ¥59,400Regular priceUnit price per¥99,900Sale price ¥59,400Sale
Corundum of the World
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Un-Heat Sapphire 0.896ct / Madagascar
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900 -
Un-Heat Padparadscha Sapphire 0.437ct / Sri Lanka
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000 -
Un-Heat Padparadscha Sapphire 0.469ct / Sri Lanka
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000 -
Un-Heat Padparadscha Sapphire 0.508ct / Tanzania
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Un-Heat Padparadscha Sapphire 0.715ct / Sri Lanka
Regular price ¥252,000Regular priceUnit price per¥252,000Sale price ¥252,000 -
Un-Heat Sapphire 0.808ct / Madagascar
Regular price ¥81,000Regular priceUnit price per¥81,000Sale price ¥81,000Sold out -
Bluish Green Sapphire 1.027ct / Thailand
Regular price ¥85,500Regular priceUnit price per¥85,500Sale price ¥85,500 -
Un-Heat Ruby 0.668ct / Madagascar
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Sold out
Sri Lanka Sapphire 1.530ct
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000Sold out -
“Royal & Cornflower color” Sapphire 1.372ct / Sri Lanka / Cabochon
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000 -
Un-Heat Sapphire 0.678ct / Kenya
Regular price ¥47,700Regular priceUnit price per -
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Ethiopia Sapphire 0.757ct
Regular price ¥81,000Regular priceUnit price per¥81,000Sale price ¥81,000Sold out -
Parti-Color Sapphire 0.812ct / Ethiopia
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000Sold out -
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Un-Heat Sapphire 0.555ct / Tanzania
Regular price ¥85,500Regular priceUnit price per¥85,500Sale price ¥85,500Sold out -
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Sri Lanka Sapphire 1.442ct
Regular price ¥189,000Regular priceUnit price per¥189,000Sale price ¥189,000Sold out -
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Sri Lanka Sapphire 0.950ct
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000Sold out -
Silky Greenish Blue Sapphire 0.56ct / Ethiopia
Regular price ¥45,000Regular priceUnit price per¥72,000Sale price ¥45,000Sold out -
Silky Greenish Blue Sapphire 0.81ct / Ethiopia
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
Sold out
Sri Lanka Sapphire 0.716ct
Regular price ¥99,900Regular priceUnit price perSold out -
Un-Heat Sapphire 1.277ct / Madagascar
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000Sold out
Spinel from Vietnam🇻🇳
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Pinkish Purple Spinel 2.452ct / Vietnam
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Iron Cobalt Spinel 0.849ct / Vietnam
Regular price ¥270,000Regular priceUnit price per¥270,000Sale price ¥270,000 -
Spinel 0.459ct / Vietnam
Regular price ¥53,100Regular priceUnit price per¥53,100Sale price ¥53,100 -
Dark Purple Spinel 6.403ct / Vietnam
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Spinel 2.067ct / Vietnam
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Purplish Pink Spinel 0.866ct / Vietnam
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
Cobalt Spinel 0.399ct / Vietnam
Regular price ¥270,000Regular priceUnit price per¥270,000Sale price ¥270,000 -
Cobalt Spinel 1.128ct / Vietnam / Iron Cobalt
Regular price ¥855,000Regular priceUnit price per¥855,000Sale price ¥855,000
Vietnamese Gems🇻🇳
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Un-Heat Silky Pink Sapphire 0.611ct / Vietnam
Regular price ¥39,600Regular priceUnit price per¥39,600Sale price ¥39,600 -
Un-Heat Silky Pink Sapphire 0.320ct / Vietnam
Regular price ¥54,000Regular priceUnit price perSold out -
Un-Heat Greenish Blue Sapphire 0.408ct / Vietnam
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600 -
Parti-Color Tourmaline 2.288ct / Vietnam
Regular price ¥36,900Regular priceUnit price per¥36,900Sale price ¥36,900Sold out -
Un-Heat Padparadscha Sapphire 13.683ct / Vietnam
Regular price ¥252,000Regular priceUnit price per¥252,000Sale price ¥252,000 -
Sold out
Trapiche Sapphire 3.845ct / Vietnam
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000Sold out -
Un-Heat Sapphire 13.069ct / Vietnam
Regular price ¥351,000Regular priceUnit price per¥351,000Sale price ¥351,000 -
Pinkish Purple Spinel 2.452ct / Vietnam
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Un-Heat Padparadscha Sapphire 0.212ct / Vietnam
Regular price ¥79,200Regular priceUnit price per¥79,200Sale price ¥79,200Sold out -
Un-Heat Double Star Sapphire 19.979ct / Vietnam
Regular price ¥495,000Regular priceUnit price per¥495,000Sale price ¥495,000 -
Star Sapphire 15.343ct / Vietnam
Regular price ¥396,000Regular priceUnit price per¥396,000Sale price ¥396,000 -
Star Sapphire 15.147ct / Vietnam
Regular price ¥144,000Regular priceUnit price per -
Un-Heat Star Sapphire 22.950ct / Vietnam
Regular price ¥162,000Regular priceUnit price per -
Un-Heat Parti-Color Sapphire 34.372ct / Vietnam
Regular price ¥99,900Regular priceUnit price per -
Un-Heat Silky Padparadscha Sapphire 0.186ct / Vietnam
Regular price ¥83,700Regular priceUnit price per¥83,700Sale price ¥83,700 -
Parti-Color Tourmaline 18.615ct / Vietnam / Long Cushion
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
Un-Heat Ruby 0.131ct / Vietnam / BuffTop GemShape(Type1) ``Made from rough stone''
Regular price ¥36,900Regular priceUnit price per¥36,900Sale price ¥36,900Sold out -
Bluish Green Sapphire 0.507ct / Vietnam
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300Sold out -
Bluish Green Sapphire 1.059ct / Vietnam
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000Sold out -
Silky Bluish Green Sapphire 2.248ct / Vietnam
Regular price ¥450,000Regular priceUnit price per¥450,000Sale price ¥450,000Sold out
Tourmaline
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Bluish Green Tourmaline 1.015ct / Nigeria
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000Sold out -
Rubelite(Tourmaline) 1.334ct / Brazil
Regular price ¥75,600Regular priceUnit price per¥75,600Sale price ¥75,600Sold out -
Paraiba Tourmaline 0.324ct / Brazil
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
Indicolite (Tourmaline) 1.119ct / Nigeria
Regular price ¥88,200Regular priceUnit price per¥88,200Sale price ¥88,200 -
Parti-Color Tourmaline 2.638ct / Afghanistan
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000 -
Violetish Grey Tourmaline 2.001ct / Nigeria
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Bi-Color Tourmaline 2.954ct / Brazil
Regular price ¥153,000Regular priceUnit price per¥153,000Sale price ¥153,000 -
Sold out
Pink Tourmaline 1.631ct / Brazil
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000Sold out -
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Pink Tourmaline 1.606ct / Brazil
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000Sold out -
UV Change Tourmaline 1.096ct / Tanzania
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
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Tourmaline 1.174ct / Mozambique
Regular price ¥49,500Regular priceUnit price perSold out -
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Tourmaline 3.249ct / Tanzania
Regular price ¥63,900Regular priceUnit price per¥63,900Sale price ¥63,900Sold out -
Bi-Color Tourmaline 1.182ct
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000 -
[Free with purchases of ¥36,900 or more] Parti-Color Tourmaline 1.20ct
Regular price ¥36,900Regular priceUnit price per¥36,900Sale price ¥36,900
Sapphire from Cameroon🇨🇲
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Silky Greenish Blue Sapphire 0.991ct / Cameroon
Regular price ¥162,000Regular priceUnit price per¥162,000Sale price ¥162,000Sold out -
Silky Blue Sapphire 0.306ct / Cameroon
Regular price ¥49,500Regular priceUnit price perSold out -
Teal Blue Sapphire 0.446ct / Cameroon
Regular price ¥73,800Regular priceUnit price perSold out -
Silky Greenish Blue Sapphire 0.707ct / Cameroon
Regular price ¥59,400Regular priceUnit price per¥59,400Sale price ¥59,400 -
Silky Pinkish/Greenish Grey Sapphire 0.699ct / Cameroon
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000Sold out -
Silky Greenish Blue Sapphire 0.489ct / Cameroon
Regular price ¥63,900Regular priceUnit price per¥63,900Sale price ¥63,900Sold out -
Parti-Color Sapphire 0.931ct / Cameroon
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000 -
Cornflower Blue Sapphire 0.379ct / Cameroon
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
Silky Greenish Blue Sapphire 0.783ct / Cameroon
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000Sold out -
【lulu's Recommend】Un-Heat Sapphire 0.686ct / Cameroon
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000Sold out -
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Un-Heat Sapphire 1.121ct / Cameroon
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000Sold out
Spinel from Tanzania
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Bluish Grey Spinel 0.583ct / Iron Cobalt / Tanzania
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000Sold out -
Orangy Purple Spinel 1.108ct / Tanzania
Regular price ¥99,900Regular priceUnit price per -
Light Pink Spinel 0.450ct / Tanzania
Regular price ¥52,200Regular priceUnit price per¥52,200Sale price ¥52,200 -
Bluish Grey Spinel 0.626ct / Iron Cobalt / Tanzania
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900 -
Iron Cobalt Spinel 0.476ct / Tanzania
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900 -
Silky Purple Spinel 0.991ct / Tanzania
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
Iron Cobalt Spinel 1.091ct / Tanzania
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Sold out
Pink Spinel 0.397ct / Tanzania
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300Sold out -
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Cobalt Spinel 0.494ct / Tanzania
Regular price ¥333,000Regular priceUnit price per¥333,000Sale price ¥333,000Sold out -
Cobalt Spinel 0.668ct / Tanzania
Regular price ¥666,000Regular priceUnit price per¥666,000Sale price ¥666,000 -
Pink Spinel 0.748ct / Tanzania
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000 -
Pink Spinel 0.311ct / Tanzania
Regular price ¥54,000Regular priceUnit price per¥54,000Sale price ¥54,000 -
Pink Spinel 0.467ct / Tanzania
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600 -
Neon Pink Spinel 0.449ct / Tanzania: Mahenge
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Lavender Spinel 1.263ct / Tanzania
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Lavender Spinel 0.646ct / Tanzania
Regular price ¥75,600Regular priceUnit price per¥75,600Sale price ¥75,600 -
Neon Orangy Pink Spinel 0.615ct / Tanzania: Mahenge
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000Sold out -
Purple-Violet Spinel 0.634ct / Tanzania
Regular price ¥46,800Regular priceUnit price perSold out -
Orange Spinel 0.578ct / Tanzania
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300 -
Light Lavender Spinel 0.844ct / Tanzania
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300 -
Silky Pink Spinel 1.245ct / Tanzania
Regular price ¥234,000Regular priceUnit price per¥234,000Sale price ¥234,000 -
Silky Pink Spinel 0.682ct / Tanzania
Regular price ¥96,300Regular priceUnit price per¥96,300Sale price ¥96,300 -
Iron Cobalt Spinel 0.825ct / Vietnam
Regular price ¥216,000Regular priceUnit price per¥216,000Sale price ¥216,000 -
Sold out
Mahenge Spinel 0.365ct / Tanzania
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out
Burmese Corundum
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Burmese unheated ruby 0.944ct ★ Silky pink, cute, lean and sharp baguette
Regular price ¥81,000Regular priceUnit price per¥81,000Sale price ¥81,000 -
Un-Heat Ruby 0.285ct / Burma / Princess Cut
Regular price ¥58,500Regular priceUnit price per¥58,500Sale price ¥58,500 -
Sold out
Ruby 0.430ct / Burma
Regular price ¥16,200Regular priceUnit price per¥27,000Sale price ¥16,200Sold out -
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Ruby 0.628ct / Burma
Regular price ¥21,600Regular priceUnit price per¥38,700Sale price ¥21,600Sold out -
Sale
Ruby 0.770ct / Burma
Regular price ¥25,200Regular priceUnit price per¥46,800Sale price ¥25,200Sale -
Royal Blue Sapphire 1.504ct / Burma
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000 -
Sold out
Parti-Color Sapphire 0.487ct / Burma
Regular price ¥96,300Regular priceUnit price per¥96,300Sale price ¥96,300Sold out -
Burmese royal blue sapphire 3.100ct ★ A cute, plump pear shape with a beautiful royal blue color.
Regular price ¥963,000Regular priceUnit price per¥963,000Sale price ¥963,000 -
Burmese unheated sapphire 1.389ct ★ A rare Burmese sapphire with a gentle atmosphere and elegant millefeuille silk ink.
Regular price ¥153,000Regular priceUnit price per¥153,000Sale price ¥153,000 -
Un-Heat Sapphire 0.862ct / Burma
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000 -
Cornflower Blue Sapphire 0.467ct / Burma
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000Sold out -
Un-Heat Sapphire 0.983ct / Burma
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Burmese unheated sapphire 1.111ct ★ A beautiful oval filled with rare Burmese silk
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000 -
Cornflower Blue Sapphire 0.478ct / Burma
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000Sold out -
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Un-Heat Sapphire 1.248ct / Burma
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000Sold out -
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Royal Blue Sapphire 0.847ct / Burma
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000Sold out -
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Royal Blue Sapphire 0.604ct / Burma
Regular price ¥153,000Regular priceUnit price per¥153,000Sale price ¥153,000Sold out -
Royal Blue Sapphire 1.028ct / Burma / Table Cube cut
Regular price ¥189,000Regular priceUnit price per¥189,000Sale price ¥189,000Sold out -
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Ruby 0.352ct / Burma
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600Sold out -
Burmese unheated sapphire 2.675ct ★ A stone with the unique beauty and interest of unheated stones, with plenty of silk layers
Regular price ¥351,000Regular priceUnit price per¥351,000Sale price ¥351,000Sold out
Nigerian Sapphire
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Un-Heat Sapphire 1.349ct / Nigeria
Regular price ¥234,000Regular priceUnit price per -
Greenish Blue Sapphire 1.075ct / Cameroon
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Yellowish Green Sapphire 1.240ct / Nigeria
Regular price ¥234,000Regular priceUnit price per¥234,000Sale price ¥234,000 -
Bluish Green Sapphire 1.215ct / Nigeria
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000 -
Parti-Color Sapphire 1.251ct / Nigeria
Regular price ¥252,000Regular priceUnit price per¥252,000Sale price ¥252,000 -
Un-Heat Sapphire 4.842ct / Nigeria
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000 -
Un-Heat Sapphire 1.888ct / Nigeria
Regular price ¥243,000Regular priceUnit price per¥243,000Sale price ¥243,000 -
【One Price】Greenish Blue Sapphire 1.193ct / Nigeria
Regular price ¥270,000Regular priceUnit price per¥270,000Sale price ¥270,000 -
Un-Heat Sapphire 1.116ct / Nigeria
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
1.125ct Nigerian sapphire ★ Dark bluish green with a sharp indigo second hand sparkle
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000 -
Nigerian sapphire 1.020ct ★ Beautiful crystal with an interesting reversible feel of bluish green and yellow
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000 -
Deep Greenish Blue Sapphire 1.608ct / Nigeria
Regular price ¥162,000Regular priceUnit price per¥162,000Sale price ¥162,000 -
Deep Silky Blue Sapphire 2.522ct / Nigeria
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Deep Bluish Green Sapphire 1.323ct / Nigeria
Regular price ¥153,000Regular priceUnit price per¥153,000Sale price ¥153,000 -
Bluish Green Sapphire 1.242ct / Nigeria
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
Sapphire 0.695ct / Nigeria / Fullcube & cabochon 2 way cut
Regular price ¥79,200Regular priceUnit price per¥79,200Sale price ¥79,200 -
Dark Greenish Blue Sapphire 2.423ct / Nigeria
Regular price ¥234,000Regular priceUnit price per¥234,000Sale price ¥234,000 -
Yellow & Dark Green Sapphire 1.489ct / Nigeria
Regular price ¥135,000Regular priceUnit price per¥135,000Sale price ¥135,000 -
1.559ct unheated Nigerian sapphire ★ Narika cut with deep color and vivid blue and green sparkles
Regular price ¥180,000Regular priceUnit price per¥180,000Sale price ¥180,000 -
Nigeria Sapphire 1.483ct / Cabochon Flower
Regular price ¥97,200Regular priceUnit price per¥97,200Sale price ¥97,200 -
Yellowish Green Sapphire 2.006ct / Nigeria
Regular price ¥396,000Regular priceUnit price per¥396,000Sale price ¥396,000 -
Bluish Green Sapphire 0.603ct / Nigeria
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000 -
Yellowish Green Sapphire 1.022ct / Nigeria
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000 -
Green Sapphire 0.774ct / Nigeria
Regular price ¥75,600Regular priceUnit price per¥75,600Sale price ¥75,600 -
Parti-Color Sapphire 0.922ct / Nigeria
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000
Malaya Garnet
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Malaya Garnet 1.087ct
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
Malaya Garnet (Pyralspite) 1.299ct / Tanzania
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000 -
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Malaya Garnet 0.865ct / Tanzania
Regular price ¥81,000Regular priceUnit price per¥81,000Sale price ¥81,000Sold out -
Malaya Garnet (Pyralspite) 0.816ct / Tanzania
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
[Focus Special Price] Malaya Garnet 7.21ct
Regular price ¥810,000Regular priceUnit price per¥810,000Sale price ¥810,000 -
Malaya Garnet (Pyralspite) 0.749ct / Color-Change Type
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
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Malaya Garnet 1.378ct
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600Sold out -
Malaya Garnet 0.870ct / Tanzania
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000 -
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Malaya Garnet 0.703ct
Regular price ¥57,600Regular priceUnit price per¥57,600Sale price ¥57,600Sold out -
[Focus Special Price] Malaya Garnet (Pyralspite) 1.229ct
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
[Focus Special Price] Malaya Garnet (Pyralspite) 0.970ct
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000Sold out -
[Focus Special Price] Malaya Garnet 1.336ct
Regular price ¥162,000Regular priceUnit price per¥162,000Sale price ¥162,000Sold out -
[Focus Special Price] Malaya Garnet 2.304ct
Regular price ¥234,000Regular priceUnit price per¥234,000Sale price ¥234,000 -
[Focus Special Price] Malaya Garnet (Pyralspite) 1.252ct
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000Sold out -
Malaya Garnet (Pyralspite) 1.355ct / Tanzania
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000 -
Malaya Garnet 0.745ct / Tanzania
Regular price ¥73,800Regular priceUnit price per¥73,800Sale price ¥73,800 -
Malaya Garnet 2.146ct
Regular price ¥216,000Regular priceUnit price per¥216,000Sale price ¥216,000 -
Malaya Garnet 2.346ct
Regular price ¥252,000Regular priceUnit price per¥252,000Sale price ¥252,000 -
Malaya Garnet 2.086ct
Regular price ¥135,000Regular priceUnit price per¥135,000Sale price ¥135,000 -
Malaya Garnet 2.549ct
Regular price ¥153,000Regular priceUnit price per¥153,000Sale price ¥153,000
We also have a selection of colored stones other than corundum.
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Sphene 1.28ct / Madagascar
Regular price ¥114,000Regular priceUnit price per¥114,000Sale price ¥114,000 -
Light Green Tourmaline 2.862ct / Nigeria
Regular price ¥108,000Regular priceUnit price per¥108,000Sale price ¥108,000 -
Bronze Zircon 13.422ct / Tanzania
Regular price ¥333,000Regular priceUnit price per¥333,000Sale price ¥333,000 -
Chrysoberyl 1.167ct / Sri Lanka
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000 -
Chrysoberyl 0.760ct / Sri Lanka
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600 -
Amethyst 4.14ct / Brazil
Regular price ¥45,000Regular priceUnit price per¥45,000Sale price ¥45,000 -
Oregon Sunstone 1.900ct
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300 -
Mexico Opal 0.66ct
Regular price ¥82,800Regular priceUnit price per¥82,800Sale price ¥82,800 -
Sphene pear set 0.62ct / Pakistan / Taper cut
Regular price ¥72,000Regular priceUnit price per -
Golden Zircon 1.20ct
Regular price ¥42,300Regular priceUnit price per¥42,300Sale price ¥42,300 -
Orange Zircon 1.25ct
Regular price ¥46,800Regular priceUnit price per¥46,800Sale price ¥46,800 -
Orange Pink Zircon 1.618ct
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600 -
Zircon 1.54ct / Sri Lanka
Regular price ¥52,200Regular priceUnit price per¥52,200Sale price ¥52,200 -
Greenish dark blue spinel 0.868ct★ A rare and cool dark green shape with a cute cabochon
Regular price ¥48,600Regular priceUnit price per¥48,600Sale price ¥48,600 -
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Green Beryl 1.00ct / Nigeria
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000Sold out -
Greyish Blue Zircon 2.177ct / Cambodia
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900Sold out -
Orangy Gold Zircon 2.338ct / Sri Lanka
Regular price ¥99,900Regular priceUnit price per¥99,900Sale price ¥99,900 -
Spessartine Garnet 1.344ct / Tanzania
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000Sold out -
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Green Beryl 1.855t / Nigeria
Regular price ¥297,000Regular priceUnit price per¥297,000Sale price ¥297,000Sold out -
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Chrysoberyl 0.905ct / Tanzania
Regular price ¥69,300Regular priceUnit price per¥69,300Sale price ¥69,300Sold out -
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Oregon Sunstone 1.889ct
Regular price ¥75,600Regular priceUnit price per¥75,600Sale price ¥75,600Sold out -
Golden Labradorite 4.51ct★A noble champagne gold with a tiger-like shredded Schiller created from rough stones★Comes with rough stones from the same lot
Regular price ¥59,400Regular priceUnit price per¥59,400Sale price ¥59,400Sold out -
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Pink Zircon 2.076ct
Regular price ¥73,800Regular priceUnit price per¥73,800Sale price ¥73,800Sold out -
Greyish Blue Zircon 2.386ct / Cambodia
Regular price ¥126,000Regular priceUnit price per¥126,000Sale price ¥126,000Sold out -
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Aquamarine 1.996ct / Nigeria
Regular price ¥42,300Regular priceUnit price per¥72,000Sale price ¥42,300Sold out
Garnet
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Rhodolite Garnet 9pc Set Total 11.11ct / Tanzania
Regular price ¥198,000Regular priceUnit price per¥198,000Sale price ¥198,000 -
Rhodolite(Pyrope) Garnet 4.900ct / Tanzania
Regular price ¥495,000Regular priceUnit price per¥495,000Sale price ¥495,000 -
Andradite (Demantoid) 0.285ct / Tanzania / New cut
Regular price ¥144,000Regular priceUnit price per¥144,000Sale price ¥144,000 -
UV Change Tsavorite 0.524ct / Tanzania
Regular price ¥75,600Regular priceUnit price per¥75,600Sale price ¥75,600 -
Malaya Garnet 2.146ct
Regular price ¥216,000Regular priceUnit price per¥216,000Sale price ¥216,000 -
Malaya Garnet 2.346ct
Regular price ¥252,000Regular priceUnit price per¥252,000Sale price ¥252,000 -
Pyrope Garnet 1.740ct
Regular price ¥79,200Regular priceUnit price per¥79,200Sale price ¥79,200 -
Pyrope Garnet 1.729ct
Regular price ¥78,300Regular priceUnit price per¥78,300Sale price ¥78,300 -
Pyrope Garnet 2.061ct / Tanzania
Regular price ¥85,500Regular priceUnit price per¥85,500Sale price ¥85,500 -
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Rhodolite Garnet 2.157ct / Tanzania
Regular price ¥63,900Regular priceUnit price per¥63,900Sale price ¥63,900Sold out -
UV Change Tsavorite 0.500ct / Tanzania
Regular price ¥87,300Regular priceUnit price per¥87,300Sale price ¥87,300 -
Sold out
Rhodolite Garnet 1.22ct / Tanzania
Regular price ¥34,200Regular priceUnit price per¥34,200Sale price ¥34,200Sold out -
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Rhodolite Garnet 2.947ct / Tanzania
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000Sold out -
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Color change garnet 0.371ct.
Regular price ¥88,200Regular priceUnit price per¥88,200Sale price ¥88,200Sold out -
Andradite (demantoid) garnet 0.896ct.
Regular price ¥396,000Regular priceUnit price per¥396,000Sale price ¥396,000 -
Malaya Garnet (Pyralspite) 2.885ct / Tanzania
Regular price ¥333,000Regular priceUnit price per¥333,000Sale price ¥333,000Sold out -
Malaya Garnet 0.870ct / Tanzania
Regular price ¥72,000Regular priceUnit price per¥72,000Sale price ¥72,000 -
Malaya Garnet 0.745ct / Tanzania
Regular price ¥73,800Regular priceUnit price per¥73,800Sale price ¥73,800 -
Malaya Garnet (Pyralspite) 1.355ct / Tanzania
Regular price ¥90,000Regular priceUnit price per¥90,000Sale price ¥90,000 -
Sold out
Malaya Garnet 0.703ct
Regular price ¥57,600Regular priceUnit price per¥57,600Sale price ¥57,600Sold out -
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Pyrope Garnet 1.754ct / Tanzania
Regular price ¥66,600Regular priceUnit price per¥66,600Sale price ¥66,600Sold out
[Bird House's Eye]
Birdhouse, who was originally a customer, fell in love with GTJ's work and their passion has led them to introduce our products to customers.
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