Skip to content

Today's new arrivals

Sort by

Sold out エチオピアサンストーン 0.624ctルース
Sold out エチオピアサンストーン 0.985ctルース
Sold out ベトナム産非加熱シルキーピンクサファイア 0.182ctルース
Sold out メデューサクォーツ(パライバクォーツ) 0.915ctルース
Sold out 【3/29 22時販売】《11石限定》ジェムガチャ💎 ピンクダイヤモンド(中ソと鑑定書付き)やブラジル産パライバトルマリンインクォーツやモンタナサファイアなど11石《複数購入割引有》 
Sold out 【3/29 22時販売】スリランカ産ドゥニライト138.3g原石(カルサイト共生)

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.