Skip to content

Product list

Sort by

Sinhalite 1.420ct loose Sale price¥12,800

Sphene 4.208ct loose Sale price¥79,800

Sphene 1.690ct loose Sale price¥12,800

Sphene 1.607ct loose Sale price¥12,800

Fire opal 2.503ct loose Sale price¥19,800

Fire opal 1.665ct loose Sale price¥9,800

Cornel pin 0.720ct loose Sale price¥3,980

Fire opal 3.894ct loose Sale price¥12,800

Andalusite 5mm loose Sale price¥6,980

Pink spinel 0.142ct loose Sale price¥9,800

Pt950 Sphene 0.21ct ring Sale price¥98,000

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.