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Sold out Synthetic spinel 1.793ct loose stone
Sold out Synthetic cobalt spinel 1.886ct loose stone
Sold out Spinel 0.310ct loose
Sold out Brazilian Goshenite 0.527ct loose stone
Sold out Colombian emerald rough stone 13.577ct
Sold out Colombian emerald 8.169ct rough stone
Sold out Colombian emerald rough stone 6.933ct
Sold out Colombian emerald rough stone 5.895ct
Sold out Indian Moonstone 5.1mm/0.426ct Loose Stone (Rose Cut)
Sold out Mali Garnet (Grossular/Andradite Garnet) 0.872ct Loose Stone from the Republic of Mali with Certificate of Authenticity
Sold out [Sales End on Sunday, February 15th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration CCG Quinque Pendant
Sold out K18YGコロンビア産エメラルド0.062ct・ダイヤモンドリング
Sold out インターナリーフローレスダイヤモンド(H&C) 4.45mm/0.305ctルース(F, IF, 3Excellent H&C) GIA&中宝
Sold out ブラックスターサファイア 1.410ctルース
Sold out 【さくらインカット】マダガスカル産アパタイト 7.9mm/1.537ct《コラボ》ルース ワッペン
Sold out [Sales end 7/31] Bungo to Alchemist x KARATZ Collaboration Jewelry (Vol. 3) Bungo Ring [Kan Kikuchi Model Ring]
Sold out [Sales end July 31] Bungo to Alchemist x KARATZ Collaboration Jewelry Vol. 3: Bungo Ring [Edogawa Ranpo Model Ring]
Sold out [Sales end 7/31] Bungo and Alchemist x KARATZ Collaboration Jewelry "Part 3" Bungo Ring [Sakunosuke Oda Model]
Sold out [Available at 10 PM on December 5th] 18K Yellow Gold Burmese Pink Spinel 3.9mm/0.276ct Hot Pink Spinel Ring
Sold out アルマンディンガーネット 2.076ctルース
Sold out 【甲州貴石切子plusthree】パイライトインクォーツ 12.164ctルース ワッペン付
Sold out 【甲州貴石切子】モルガナイト 14.931ct《コラボ》ルース ワッペン付
Sold out 【サンジェ氏】ブルージルコン 0.322ctルース
Sold out ロードライトガーネット 0.990ctルース
Sold out アマゾン産グリーンオパール 1.120ctルース
Sold out 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) 1.127ctルース
Sold out ピンクスピネル 0.409ctルース
Sold out ブラジル産ロードナイト 2.126ctルース 日独鑑
Sold out モザンビーク産モザンビーク産パライバトルマリン 2.037ctルース 中宝分析付
Sold out ミャンマー産トラピッチェルビー 0.179ct原石
Sold out 【12545153掲載】ミャンマー産トラピッチェルビー 0.160ct原石
Sold out オーストラリア産エメラルド 0.320ctルース
Sold out カシミール産非加熱サファイア 0.260ctルース
Sold out カシミール産非加熱サファイア 0.210ctルース
Sold out マダガスカル産ホットピンクサファイア 1.120ctルース
Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Acrylic Plate (Made to Order)
Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Merchandise - Random Hard Cards (12 Types)
Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Clear Postcard Set
Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Merchandise: Triple Acrylic Keychains (2 Types)
Sold out [Sales End on Monday, January 12th] TV Anime "Tokyo Ghoul" x KARATZ Collaboration Part 2: Newly Illustration Glitter Can Badges (2 Types)
Sold out ミャンマー産非加熱ルビー 0.433ctルース
Sold out オーストラリア産ボルダーオパール 4.729ctルース
Sold out アベンチュリンアクアマリンキャッツアイ 1.567ctルース
Sold out クォーツ 96.732ctルース(爆裂水晶)
Sold out ロシア産デマントイドガーネット(ホーステール認む) 5.2mm/0.702ctルース
Sold out 【KEN氏】ピンクトルマリン 4.0mm/0.300ctルース
Sold out 【KEN氏】メキシコ産ファイアオパール 1.150ctルース
Sold out 【KEN氏】オレゴンサンストーン 1.333ctルース

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.