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Width: 5.1 - 6.0mm

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Pink spinel 0.969ct loose Sale price¥9,800

Moss Agate 1.056ct loose Sale price¥9,800

Moss Agate 0.771ct loose Sale price¥6,980

Sold out アメリカ産ペリドット 0.573ctルース(リリーパッドインクルージョン)
Sold out インド産アイオライト 0.620ctルース
coming soon [Lottery Sale: Friday, October 31st, 10:00 AM] Madagascar Padparadscha Sapphire 5.6mm/0.768ct Loose Stone - Central Gem Laboratory
Sold out 【ゆきんこカット】YAG(イットリウムアルミニウムガーネット) 1.391ctルース 鑑別書
Sold out メデューサクォーツ(パライバクォーツ) 1.098ctルース
coming soon [Sale at 10:00 PM on October 13th] [Sakura In-Cut] Sri Lanka Ratnapura Sapphire 6.0mm/0.839ct Loose
Sold out 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) 0.577ctルース
Sold out バイカラーゾイサイト 0.745ctルース
Sold out 中国産シンシャ(シナバー) 1.704ctルース
Sold out 中国産シンシャ(シナバー) 1.908ctルース 鑑別書
Sold out 中国産シンシャ(シナバー) 5.5mm/0.983ctルース 鑑別書
Sold out 中国産シンシャ(シナバー) 1.257ctルース 鑑別書
Sold out アンデシン・ラブラドライト(通称名 ブルームーンストーン) 0.540ct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) 0.434ctルース
Sold out スペイン産スファレライト 0.896ctルース
Sold out スペイン産スファレライト 0.955ctルース
coming soon Lottery Sale 092109_Brazilian Blue Anatase 0.424ct Loose Stone

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.