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coming soon [Lottery Sale 0818_07] Madagascar Bi-Color Sapphire 1.870ct Loose Stone with Gem Identification Report
coming soon [Lottery Sale 0818_06] Madagascar Royal Blue Sapphire 0.623ct Loose Stone with Certificate
coming soon 【9/2 22時販売】マダガスカル産グランディディエライト 0.226ctルース 鑑別書
coming soon 【9/2 22時販売】マダガスカル産パパラチアサファイア 0.497ctルース DGL鑑
coming soon 【12563813掲載】マダガスカル産サファリン 0.166ctルース
Sold out 【8/31 22時販売】マダガスカル産グランディディエライト 2.8mm/0.113ctルース 鑑別書
Sold out マダガスカル産バイカラーサファイア 1.665ctルース
coming soon 【12564187掲載】マダガスカル産アレキサンドライト 1.870ct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.