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Bicolor/Party color system

Some gemstones exhibit multiple colors within a single stone; two colors are called bicolor, three colors are tricolor, and multiple colors are called particolor. Some are clearly separated, while others have a gradation, so I think these are gemstones that give you a sense of their individuality.

Karatz GemMagazine
" Bicolor gemstone "

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coming soon 【12565230掲載】ブラジル産バイカラートルマリン 21.222ctルース
Sold out スリランカ産バイカラーサファイア 0.405ctルース
Sold out モンゴル産バイカラーアンデシン 2.399ctルース
Sold out モンゴル産バイカラーアンデシン 1.861ctルース
Sold out モンゴル産バイカラーアンデシン 1.253ctルース
Sold out ブラジル産バイカラーシトリン 4.027ctルース
Sold out ジンバブエ産バイカラーユークレース 1.355ct原石
Sold out ジンバブエ産バイカラーユークレース 0.099ctルース
Sold out ブラジル産バイカラートパーズ 2.116ctルース
Sold out タンザニア産バイカラーゾイサイト 0.305ctルース
Sold out キャシテライト 1.069ctルース
Sold out マダガスカル産バイカラーサファイア 1.665ctルース
Sold out ブラジル産パーティカラートルマリン 6.799ctルース
Sold out ジンバブエ産ユークレース 0.066ctルース
Sold out ジンバブエ産ユークレース 0.081ctルース
Sold out ジンバブエ産ユークレース 0.058ct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.