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ブラジル産サンタマリアアクアマリン 0.299ctルース

【#202607 Akihabara Pop-up Store - Currently out for display】【12563131 Posted】Brazilian Santa Maria Aquamarine 0.299ct Loose Stone Sale price¥19,800
ブラジル産スカイブルートパーズ 0.906ctルース

[#202607 Akihabara Pop-up Store Takeout in Progress] [12562065 Posted] Brazilian Sky Blue Topaz 0.906ct Loose Stone Sale price¥12,800
南アフリカ産ダイヤモンド原石（ソーヤブル） 0.280ct原石

【#202607 Akihabara Pop-up, Currently Out of Stock】【12563269 Posted】Rough Diamond (Sawable) from South Africa 0.280ct Sale price¥88,800
Mini bottle keychain filled with natural stones (11 colors available, multiple purchase discount)

Mini bottle keychain filled with natural stones (11 colors available, multiple purchase discount) Sale price¥3,980
Pt900 ダイヤモンド 1.00ctct リング

【#202607 Akihabara Pop-up Store - Currently Out of Stock】【Colorful】Pt900 Diamond 1.00ct Ring Sale price¥98,000
【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate

【#202607 Akihabara Pop-up Store - Currently Removed for Display】[Colorfuri] Pt900 Black Opal 0.83ct / Diamond 0.62ct Ring with Certificate Sale price¥198,000
マグネシオアキシナイト 0.154ctルース

[#202607AkihabaraPopUpTakenOut] [12560302Listed] Magnesioaxinite 0.154ct Loose Sale price¥18,800
パキスタン産ルードヴィッヒアイトインペリドット 1.624ctルース

【#202607 Akihabara Pop-up Items Out for Display】【12555648 Posted】Ludwigite in Peridot from Pakistan 1.624ct Loose Sale price¥9,800
【スターインカット】メキシコ産ファイアオパール 7mm/0.678ctルース ワッペン付

[Star in cut] Mexican fire opal 7mm/0.678ct loose patch Sale price¥39,800
スライストラピッチェダイヤモンド 0.228ctルース

[#202607 Akihabara Pop-up currently out of office] [Sale starts August 19th, 10 PM JST] Slice Trapiche Diamond 0.228ct Loose Sale price¥18,800
【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone

【Sakura Shape】Synthetic Sapphire 8.8mm/3.631ct Loose Stone Sale price¥39,800
マダガスカル産パパラチアサファイア 0.545ctルース DGL鑑

[#202607 Akihabara Pop-up Store Takeout][Shinjuku Marui Annex 202605 Takeout][12548265 Listed] Padparadscha Sapphire 0.545ct Loose Stone Sale price¥69,800
ナイジェリア産コバルトガーナイト 0.147ctルース

【#202607 Akihabara Pop-up Store - Currently Removed from Stock】【Listed on 12563127】Nigerian Cobalt Hausmannite 0.147ct Loose Sale price¥22,800
K18 血赤珊瑚 0.33ctct ペンダント（ネックレス）

【#202607 Akihabara Pop-up Store - Currently out on loan】【22602619 Listed】K18 Blood Coral 0.33ct Pendant (Necklace) Sale price¥45,800
コロンビア産ノンオイルエメラルド 4.1mm/0.240ctルース GIA

[Lottery Sale 0629_08] Colombian Non-Oil Emerald 4.1mm/0.240ct Loose GIA Sale price¥458,000
ブラジル産ルベライト 1.100ctルース

[Published 12563933] Brazilian Rubellite 1.100ct Loose Stone Sale price¥98,000
マダガスカル産パパラチアサファイア 3.9mm/0.314ctルース 中宝鑑

[Listed on 12563962] Madagascar Padparadscha Sapphire 0.314 ct Loose Stone Sale price¥69,800
Brazilian rhodonite 1.423ct loose stone

Brazilian rhodonite 1.423ct loose stone Sale price¥29,800
カナダ産ユーディアライト 2.796ctルース

[Listed on 12562258] Eudialyte from Canada 2.796 ct loose stone Sale price¥39,800
ジンバブエ産ユークレース 0.066ctルース

【Sales start 10 PM, August 2 JST】Bicolor Euclase from Zimbabwe 0.066ct Loose Stone Sale price¥12,800
ジンバブエ産ユークレース 0.081ctルース

[On sale August 2nd, 10 PM JST] Bicolor Euclase from Zimbabwe, 0.081ct loose gemstone Sale price¥14,800
スイートホーム産ロードクロサイト 0.100ctルース 鑑別書

[On sale August 2nd at 10 PM JST] Sweet Home Mine Rhodochrosite 0.100ct Loose Gemstone with Certificate Sale price¥8,800
カンボジア産ブルージルコン 8.5mm/3.546ctルース 鑑別書

[12563993] Cambodian Blue Zircon 3.546ct Loose Sale price¥69,800
Pt850 ベネチアンチェーン ネックレス 約45cm スライドチェーン

[On sale 8/1 at 10 PM JST] [Colorflee] Pt850 Venetian Chain Necklace, approx. 45cm, adjustable slide chain Sale price¥39,800
Pt900 ビルマ産ルビー 1.07ct・ダイヤモンド0.32ctリング GIA

[22602674 Listed] [Karafuri] Pt900 Burma Ruby 1.07ct Ring Sale price¥258,000
[On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available.

[On sale August 1 at 10 PM] Limited 10 Stones: Sapphire Gacha (including unheated cornflower blue sapphires, normally ¥69,800), with a bonus Sange sapphire. Multiple purchase discount available. Sale price¥6,980
Pt900 ピンクサファイア 0.465ct・ダイヤモンド0.12ctリング 鑑別書

[On sale August 6th, 10 PM JST] [Colorflee] Pt900 Pink Sapphire 0.465ct, Diamond 0.12ct Ring with identification report Sale price¥59,800
K18 ブルーサファイア 1.13ct・ダイヤモンド0.75ctリング 鑑別書

[On Sale August 6, 10 PM] [Colori] K18 Blue Sapphire 1.13ct / Diamond 0.75ct Ring with Appraisal Report Sale price¥188,000
Pt850 ルビー 0.85ct・ダイヤモンド0.09ctリング 鑑別書

[On sale at 10 PM on August 6] [Karafuri] Pt850 Ruby 0.85ct, Diamond 0.09ct Ring with Appraisal Certificate Sale price¥79,800
コロンビア産パイライト・雲母インエメラルド 4.8mm/0.360ctルース 鑑別書

[Sale on 8/6 at 10 PM JST] Colombian Pyrite and Mica in Emerald, 4.8mm/0.360ct, Loose Stone with Certificate Sale price¥29,800
コロンビア産トラピッチェエメラルド 0.252ctルース

[On sale August 1, 10 PM] Colombian Cosquez Trapiche Emerald 0.252ct Loose Stone with Certificate Sale price¥35,800
コロンビア産トラピッチェエメラルド 0.231ctルース

[On sale August 1, 10 PM JST] Colombian Cosquez Trapiche Emerald, 0.231 ct, Loose Stone with Certificate Sale price¥33,800
カンボジア産ブルージルコン（ラタナキリブルー） 1.847ctルース

【On Sale August 1st, 10 PM JST】Cambodian Blue Zircon (Ratanakiri Blue) 1.847ct Loose Stone with Certificate Sale price¥22,800
アフガニスタン産グリーンアウイナイト 0.062ctルース 鑑別書

[On Sale July 31, 10 PM JST] Afghanistan Green Hauyne 0.062ct Loose Gemstone with Certificate Sale price¥16,800
ナイジェリア産マンダリンガーネット 0.750ctルース

[On sale 7/30 at 10 PM] Nigerian Mandarin Garnet 0.750 ct Loose Stone with Gemstone Identification Report Sale price¥22,800
ブラジル産メデューサクォーツ（パライバクォーツ） 0.456ctルース

[12558272 listed] Brazilian Medusa Quartz (Paraiba Quartz) 0.456ct Loose Sale price¥9,800
ゴールデンジルコン 0.752ctルース

[On sale 7/30 at 10 PM] Tanzanian Golden Zircon 0.752ct Loose Stone with Certificate Sale price¥12,800
ナミビア産ジェレメジェバイト 0.089ctルース 鑑別書

[Listed as 12563891] Namibian Jeremejevite 0.089ct Loose Sale price¥22,800
ブラジル産アレキサンドライト 0.102ctルース 鑑別書

[On sale July 29th, 10 PM JST] Brazilian Alexandrite 0.102ct Loose Stone with Certification Sale price¥29,800
マダガスカル産ブルーサファイア 0.662ctルース

[Sales start August 2nd at 10 PM] Madagascar blue sapphire 0.662 ct loose gemstone with a certificate Sale price¥18,800
コロンビア産エメラルド 0.107ctルース

[On sale August 2 at 10 PM] Colombian Emerald 0.107 ct Loose Gemstone with Certificate Sale price¥12,800
オーストラリア産ブラックオパール 0.702ctルース

[On sale August 1 at 10 PM] Australian black opal 0.702 ct loose stone with certificate Sale price¥29,800
スリランカ産ホワイトサファイア 1.025ctルース 鑑別書

[On sale July 29, 10 PM] Sri Lankan White Sapphire 1.025ct Loose Stone with Certification Sale price¥35,800
アフガニスタン産グリーンアウイナイト 0.150ctルース

[On sale July 29th at 10 PM] Afghan Green Hauyne 0.150ct Loose Stone with Certificate Sale price¥55,800
マダガスカル産サファイア 1.650ctルース GIA

[Lottery Sale 0521_08] Madagascar Sapphire 1.650ct Loose GIA Sale price¥158,000
Pt900 アコヤ真珠（アコヤパール）10.2mm・ダイヤモンド0.23ctリング 鑑別書

[Published in 22602657] [Colorful] Pt900 Akoya Pearl Ring Sale price¥98,000
ネパール産カイヤナイト 2.461ctルース

[On sale July 26th at 10 PM] Nepali Kyanite 2.461ct Loose Stone Sale price¥12,800
奈良県天川村産レインボーガーネット（アンドラダイトガーネット） 3.219ctルース

[On sale July 26th at 10 PM] Nara Prefecture, Tenkawa Village Rainbow Garnet (Andradite Garnet) 3.219ct Loose Stone Sale price¥24,800

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.