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Brazilian

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Sold out ブラジル産メデューサクォーツ(パライバクォーツ) 6.954ctルース
Sold out Citrine 0.833ct loose stone
Sold out アメジスト 8.044ctルース
Sold out ダンビュライト 1.427ctルース
Sold out アクアマリンキャッツアイ 3.528ctルース
Sold out Brazilian Alexandrite 0.244ct Ruth (Hemachita Mine)
Sold out Brazilian dumortierite in quartz 4.592ct loose
Sold out Brazilian Dumortierite in Quartz 1.779ct Loose Stone
Sold out Brazilian alexandrite 0.112ct loose
Sold out Brazilian bicolor tourmaline 7.017ct loose stone
Sold out Brazilian Dumortierite in Quartz 2.012ct Loose Stone
Sold out Brazilian Dumortierite in Quartz 1.995ct Loose Stone
Sold out Brazilian Dumortierite in Quartz 1.924ct Loose Stone
Sold out ブラジル産パライバトルマリン 0.420ct原石
Sold out Limited Edition of 10 Blue Gemstones! 💎 0.142ct Brazilian Paraiba Tourmaline, Euclase from Zimbabwe, 1.17ct Cobalt Spinel (Certificate of Authenticity: Color Shift), Benitoite, and More! Discounts Available for Multiple Purchases!
Sold out Brazilian Goshenite 0.527ct loose stone
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 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 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 【KEN氏】ピンクトルマリン 4.0mm/0.300ctルース
Sold out ブラジル産バイカラートルマリン 1.554ctルース(トリカラートルマリン)
Sold out ブラジル産ブルートルマリン 0.987ctルース(ティールカラー)
Sold out ブラジル産ピンクトルマリン 0.643ctルース
Sold out Limited to 12 stones! Gemstone Gacha including Brazilian Paraiba Tourmaline rough stone 💎 1 rough stone (Multiple purchase discounts available)
Sold out Limited to 8 stones: 1 loose Brazilian ametrine (concave cut, average 10 carats) Multiple purchase discounts available
Sold out ブラジル産アレキサンドライト 0.058ctルース
Sold out ブラジル産バイカラートルマリン 4.782ctルース
Sold out ブラジル産アンダリュサイト 7.656ctルース
Sold out 【猫カット】ブラジル産ホワイトカルセドニー 0.707ctルース
Sold out ブラジル産インペリアルトパーズ 3.287ct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.