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colored stone loose

A list of colored stones and loose gemstones.

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Purple spinel 0.714ct loose Sale price¥12,800

Violet spinel 0.810ct loose Sale price¥12,800

Purple spinel 0.754ct loose Sale price¥9,800

Purple spinel 0.812ct loose Sale price¥9,800

Blue spinel 1.949ct loose Sale price¥29,800

Aquamarine 0.617ct loose Sale price¥8,800

[KEN] Andesine 3.430ct loose Sale price¥25,800

Green Zoisite 3.617ct loose Sale price¥118,000

Sphene 7.6mm/2.077ct loose Sale price¥59,800

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.

Written by KARATZ, book “Jewelry Illustrated Book”

The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.