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5 major gems

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Black opal 2.293ct loose Sale price¥98,000

[KEN] Opal 0.101ct loose Sale price¥8,800

[KEN] Opal 0.458ct loose Sale price¥12,800

[KEN] Opal 0.536ct loose Sale price¥8,800

FANCY INTENSE YELLOW, SI-1 Sale price¥25,800

Opal 426.985ct rough stone Sale price¥39,800

Fire opal 1.547ct loose Sale price¥12,800

Iron opal 177.315ct loose Sale price¥22,800

Opal 168.640ct rough stone Sale price¥29,800

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.