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Rough Diamond

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Diamond 2.810ct rough stone Sale price¥9,800

Diamond rough stone 0.967ct Sale price¥5,980

Diamond rough stone 1.293ct Sale price¥5,980

Sold out シエラレオネ産イエローダイヤモンド原石(ソーヤブル) 0.102ct原石
Sold out 【12554800掲載】アンゴラ産グリーンダイヤモンド原石(ソーヤブル) 0.524ct原石
Sold out アンゴラ産グリーンダイヤモンド原石(ソーヤブル) 0.491ct原石(トライゴン)
Sold out ダイヤモンド原石(ソーヤブル) 0.610ct原石(トライゴン)
Sold out ダイヤモンド原石(ソーヤブル) 0.597ct原石
Sold out Zimbabwean rough diamond (sawable) 0.054ct rough stone
Sold out ダイヤモンド原石(ソーヤブル) 0.635ct原石(トライゴン有)
Sold out ダイヤモンド原石(メイカブル) 0.727ct原石
Sold out ダイヤモンド原石(ソーヤブル) 0.259ct原石
Sold out ダイヤモンド原石(ソーヤブル) 0.251ct原石・トライゴン有
Sold out ダイヤモンド 3.35ct原石  中宝付
Sold out ダイヤモンド 5.003ct原石
Sold out ダイヤモンド 0.210ct原石
Sold out アンゴラ産グリーンダイヤモンド原石(ソーヤブル) 0.525ct原石
Sold out ダイヤモンド原石(ソーヤブル) 0.416ct原石(トライゴン)
Sold out マクルダイヤモンド 0.545ct原石(トライゴン有り)
Sold out ダイヤモンド原石(メイカブル) 0.584ct原石
Sold out ダイヤモンド原石(ソーヤブル) 0.305ct原石
Sold out ダイヤモンド原石(ソーヤブル) 0.744ct原石

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 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.