Skip to content

Product list

Sort by

Yellow Beryl 26.632ct loose Sale price¥178,000

Sphene 1.751ct loose Sale price¥21,800

Sphene 1.210ct loose Sale price¥14,800

Blue opal 1.70ct loose Sale price¥16,800

Blue opal 1.64ct loose Sale price¥14,800

Blue opal 1.61ct loose Sale price¥14,800

Blue opal 1.53ct loose Sale price¥13,800

Blue opal 1.50ct loose Sale price¥11,800

Topaz 73.29ct rough stone Sale price¥9,800

Amethyst 4.961ct loose Sale price¥3,980

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.