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Sold out Mexican Smithsonite 2.697ct loose stone
coming soon 【12565232掲載】メキシコ産カンテラオパール 7.561ctルース
coming soon 【12565231掲載】メキシコ産カンテラオパール 12.620ctルース
coming soon 【11/7 22時販売】メキシコ産ファイアオパール 0.587ctルース
coming soon 【11/7 22時販売】メキシコ産ファイアオパール 0.700ctルース
Sold out メキシコ産ウォーターオパール 0.199ctルース
Sold out K18YG ウォーターオパール(ファセットカット) 0.457ct リング 鑑別書
Sold out メキシコ産ファイアオパール 1.270ctルース
Sold out 【スターインカット】メキシコ産ファイアオパール 7mm/0.678ctルース ワッペン付
Sold out メキシコ産エッグインオパール 3.054ctルース
Sold out メキシコ産ダンビュライト 4.146ctルース
Sold out 【甲州貴石切子plusthree】メキシコ産ファイアオパール 4.633ctルース《コラボ》 ワッペン
Sold out メキシコ産オパール 0.677ctルース
Sold out メキシコ産オパール 0.854ctルース
Sold out Mexican Hyalite Opal 1.215ct Loose (Faceted Cut)
Sold out メキシコ産オパール 1.666ctルース
Sold out 《Limited to 10 Stones》Win a Koshu cut "Checker x Comet" Mexican fire opal, normally priced at 79,800 yen! 💎Fire Opal Gacha (Plus, get one extra "Contraluz" stone!) 《Bulk purchase discount available》
Sold out Mexican Fire Opal 0.290ct Loose (Faceted Cut)
Sold out 【12561173掲載】メキシコ産ファイアオパール(ファセットカット) 0.645ctルース
Sold out 【12562810掲載】メキシコ産カンテラオパール 8.097ctルース
Sold out メキシコ産カンテラオパール 5.410ctルース
Sold out メキシコ産カンテラオパール 2.096ctルース
Sold out メキシコ産ウォーターオパール 1.018ctルース
Sold out メキシコ産オパール 0.244ct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.