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Sold out ブラジル産ティンカーベルクォーツ(ピンクファイヤークォーツ) 4.626ct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) 0.826ctルース
Sold out チベット産バイカラーアンデシン 0.685ctルース
Sold out 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) 1.389ctルース
Sold out スリランカ産コバルトスピネル 0.647ctルース
Sold out 北海道産ロードクロサイト 0.835ctルース
Sold out 北海道産ロードクロサイト 0.955ctルース
Sold out 北海道産ロードクロサイト 0.905ctルース
Sold out 北海道産ロードクロサイト 1.035ctルース
Sold out タイ産クリムゾンレッドルビー  0.930ctルース
Sold out Sphalerite 10mm/4.795ct loose《Gemstone encyclopedia published》
Sold out コロンビア産ノンオイルエメラルド 0.384ctルース
Sold out インディゴライトトルマリン 1.576ctルース
Sold out オーストラリア産ブラックオパール 0.559ctルース
Sold out オーストラリア産ブラックオパール 0.616ctルース
Sold out Paraiba tourmaline from Mozambique 0.083ct loose
Sold out Paraiba tourmaline from Mozambique 0.089ct loose
Sold out インド産カバンサイト 2.408ctルース
Sold out Afghanite 1 stone loose from Afghanistan《Discount available for multiple purchases》
Sold out 《Limited to 7 stones》1 stone tourmaline in quartz from Sri Lanka loose (8-9mm, octagonal cut)《Multiple purchase discount available》
Sold out Paraiba tourmaline from Brazil 0.229ct loose
Sold out Rhodochrosite 0.300ct loose from Detroit City
Sold out デトロイトシティ産ロードクロサイト 0.317ctルース
Sold out Silky diamond 2.7mm/0.090ct loose

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.