Sale

[Lottery Sale 0731_06] Colombian Pyrite in Emerald 2.988 ct Loose Stone with Japanese and German Gemological Certificates Sale price¥228,000

[Lottery Sale 0731_10] Colombian Muzo Non-Oil Emerald 0.370ct Loose GIA Sale price¥298,000

[Lottery Sale 0825_09] Colombian Non-Oil Emerald 0.080ct Loose GIA Sale price¥118,000

[Lottery Sale 0825_08] Unheated Burmese Jadeite Spinel 0.490ct Loose Stone with GUILD Certificate Sale price¥128,000

[Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report Sale price¥79,800

[Lottery Sale 0818_09] Brazilian Dioptase 1.608ct Loose with Certificate Sale price¥59,800

[Lottery Sale 0825_10] Colombian Non-Oil Emerald 0.090ct Loose GIA Sale price¥128,000

[Lottery Sale 0812_18] Zambian Non-Oil Emerald 0.540ct Loose GIA Sale price¥178,000

《Limited to 12 Stones》Russian Phenakite 1 Stone Loose (Average 0.35ct) 《Multiple Purchase Discount Available》 Sale price¥7,980

《Limited to 12 Stones》Russian Phenakite 1 Stone Loose (Average 0.35ct) 《Multiple Purchase Discount Available》 Sale price¥8,800

【Sales start: August 11, 10 PM JST】《Limited 14 stones》Rare Stone Gacha featuring Leucogarnet, Cinnabar, Gahnite, and more!《Bulk Purchase Discount Available》 Sale price¥7,980

Tibetan bicolor andesine 0.755ct loose stone Sale price¥6,980

【レビューテスト】購入不可 Sale price¥0

Pt900/Pt850 ピンクトルマリン 1.10ct ダイヤモンド0.02ctペンダント（ネックレス）鑑別書

[22602719 Posted] [Calafuri] Pt900/Pt850 Pink Tourmaline 1.10ct Diamond 0.02ct Pendant (Necklace) with Certificate Sale price¥98,000

K18WG アレキサンドライト 0.32ct ダイヤモンド0.29ctペンダントトップ（ネックレストップ）鑑別書

[Listed in 22602716] [Colorfuri] K18WG Alexandrite 0.32ct Diamond 0.29ct Pendant Top with Certificate Sale price¥128,000

K18WG アレキサンドライト 0.64ct ダイヤモンド0.04ctペンダントトップ（ネックレストップ）鑑別書

[Published in 22602715] [Colorful] K18WG Alexandrite 0.64ct Diamond 0.04ct Pendant Top (Necklace Top) with Identification Report Sale price¥228,000

Pt900 グロッシュラーガーネット 1.31ct ダイヤモンド0.24ctリング鑑別書

[Published as 22602712] [Colorful] Pt900 Grossular Garnet 1.31ct Diamond 0.24ct Ring with Appraisal Report Sale price¥128,000

【8/31 22時販売】【カラフリ】Pt900 カラーチェンジサファイア0.446ct ダイヤモンド0.12ctリング鑑別書 Sale price¥89,800

【9/4 22時販売】《限定7石》コロンビア産ミントカラーエメラルド原石（平均0.51ct）《複数購入割引有》 Sale price¥6,980

【8/30 22時販売】《残り2石》コロンビア産エメラルド原石（平均0.25ct）《複数購入割引有》 Sale price¥7,980

【8/29 22時販売】《限定11石》コロンビア・ムゾー産エメラルド原石（平均0.20ct）《複数購入割引有》 Sale price¥5,980

【8/30 22時販売】マダガスカル産サファリン 0.164ctルース鑑別書 Sale price¥12,800

【8/30 22時販売】マダガスカル産サファリン 0.145ctルース鑑別書 Sale price¥11,800

【8/29 22時販売】《限定13石》通常59800円の甲州貴石切子パープルスキャポライト含むパープルスキャポライト（さらにサンジェ氏タンザナイト1石付き）《複数購入割引有》 Sale price¥3,980

イエローダイヤモンド 0.270ctルース(UNDER N(VERY LIGHT YELLOW), SI-2)

【8/30 22時販売】イエローダイヤモンド 4.0mm/0.270ctルース(UNDER N(VERY LIGHT YELLOW), SI-2) Sale price¥29,800

【8/30 22時販売】ダイヤモンド 4.4mm/0.309ctルース(D, VVS-1, 3Excellent) Sale price¥79,800

【8/30 22時販売】《限定15石》甲州貴石切子plusthreeローズクォーツ2石・フローラドロップカットを必ず含むローズクォーツガチャ（おまけで山本氏ローズクォーツ）《複数購入割引有》 Sale price¥2,980

Limited to 13 stones! Tourmaline gacha featuring indigolite tourmaline worth ¥50,000 and rubellite worth ¥60,000. Plus, one canary yellow tourmaline. Discounts available for multiple purchases. Sale price¥6,980

【8/30 22時販売】ジンバブエ産スフェーン 0.302ctルース Sale price¥8,800

【8/30 22時販売】コロンビア産ミントカラーエメラルド 0.359ctルース Sale price¥12,800

【8/30 22時販売】メキシコ産ファイアオパール 0.352ctルース Sale price¥7,980

【8/30 22時販売】ジンバブエ産スフェーン 0.332ctルース Sale price¥9,800

【8/29 22時販売】マダガスカル産アンダリュサイト 0.454ctルース Sale price¥7,980

【8/29 22時販売】タンザニア産パープルスピネル 0.751ctルース Sale price¥18,800

【8/29 22時販売】タンザニア産ミントガーネット 0.296ctルース Sale price¥8,800

【8/29 22時販売】ブラジル産ラベンダークォーツ（スコロライト） 0.475ctルース Sale price¥7,980

[#202607 Akihabara Pop-up Store - Currently Removed from Stock] [Listed as 12555668] Cambodian Colorless Zircon 0.929ct Loose Stone Sale price¥9,800

[Camellia cut] Mexican fire opal 1.270ct loose with patch Sale price¥69,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563192】Unheated Ruby 0.210ct Loose Stone Sale price¥62,800

【#202607 Akihabara Pop-up Store - Currently Removed】【Listed as 12563268】Rough Diamond (Sawable) from South Africa 0.271ct Sale price¥88,800

マダガスカル産ベキリーブルーガーネット（カラーチェンジガーネット） 0.284ctルース

【#202607 Akihabara Pop-up, Currently Out of Stock】【12563254 Listed】Madagascar Bekily Blue Garnet (Color Change Garnet) 0.284ct Loose Sale price¥59,800

マダガスカル産アンデシン・ラブラドライト（通称名レインボームーンストーン） 0.116ctルース

【#202607 Akihabara Pop-up Store - Currently Displayed Off-site】【Listed as 12563184】Madagascar Andesine-Labradorite (Common Name: Rainbow Moonstone) 0.116ct Loose Gemstone Sale price¥14,800

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【12563063 Listed】Padparadscha Sapphire 0.619ct Loose Stone Sale price¥138,000

Pakistani Peridot 5.2mm/0.562ct Loose Stone Sale price¥9,800

Royal blue sapphire 1.220ct loose stone Sale price¥258,000

[Lottery Sale ②_202608_08] Unheated Color Change Sapphire from Sri Lanka 1.140ct Loose Stone GIA Sale price¥258,000

[#202607AkihabaraPop-upExhibition][12563418Posted] Burmese Ruby 0.303ct Loose Sale price¥9,800

【#202607 Akihabara Pop-up, Currently Out of Office】【12563057 Listed】Sri Lankan Royal Blue Sapphire 1.060ct Loose Stone Sale price¥188,000

KARATZ Custom Made

Why not take your favorite gemstone that you found at KARATZ and have it made into custom-made jewelry? It will be made by skilled Japanese craftsmen.
We carefully craft each piece of jewelry, starting with the stone setting, to match the individual characteristics of the gemstone.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.