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クッションカット

Cushion cut

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Sold out ピンクダイヤモンド(クッションカット) 0.157ctルース(FANCY DEEP PUPPLE PINK, I1)
Sold out モザンビーク産エルバイトトルマリン 1.793ctルース
Sold out ブラジル産ロンドンブルートパーズ 5.978ctルース
Sold out ティールブルーサファイア 0.275ctルース
Sold out ナイジェリア産コバルトガーナイト 0.346ctルース 鑑別書
Sold out ブラジル産モルガナイト 7.339ctルース
Sold out ブラジル産メデューサクォーツ(パライバクォーツ) 1.132ctルース
Sold out Blue Garnite from Nigeria 0.514ct Ruth Japanese-German Edition
Sold out 0.628ct Mozambican Rhodolite Garnet Loose Stone
Sold out 0.522 ct Dumortierite in Quartz from Brazil, Loose
Sold out 【12562025掲載】ブラジル産ライモナイトインブルートパーズ 6.701ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.975ctルース
Sold out ブラジル産デュモルチェライトインクォーツ 0.905ctルース
Sold out Gray Diamond 0.079ct Loose (FANCY DARK GRAY, I-1)
Sold out Cambodian Blue Zircon (Ratanakiri Blue) 0.354ct Loose Stone
Sold out パキスタン産ヴィータニエミアイト 0.184ctルース
Sold out Tanzanite 0.505ct loose stone from Tanzania
Sold out カラーチェンジジルコン 0.556ctルース
Sold out Pink sapphire (with hematite) 0.271ct loose stone
Sold out Cornflower Blue Sapphire 0.370ct Loose AIGS
Sold out Grandidierite from Madagascar 0.269ct loose stone
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out US Oregon Sunstone, 1.640 ct, Loose
Sold out 1.676ct loose Oregon sunstone from the United States

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.