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Gem Gacha

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Ruby 0.258ct loose Sale price¥18,800

Sold out 【1/1 0時販売開始】🎍2026年 新春ガチャ🎍 《新春2万円ガチャ宝石福袋》最大10万円相当の宝石+アヒマディ博士サイン付き新刊書籍「麗しの宝石・結晶・鉱物 近山晶コレクション」が必ずもらえる【新年限定・宝石ガチャ】【福袋まとめて購入割引】
Sold out 【1/2 22時販売】《限定11石》バイカラーガチャ(ジンバブエ産バイカラーユークレース、バイカラーサファイア、バイカラーゾイサイト含む)《複数購入割引有》
Sold out 【1/3 22時販売】《限定13石》ベリルガチャ(甲州貴石切子のアクアマリン・ボルテックスカット含む)1石ルース《複数購入割引有》
Sold out 【1/1 0時販売開始】🎍2026年 新春ガチャ🎍 《新春1万円ガチャ宝石福袋》最大4万円相当の宝石が当たるチャンス 【新年限定・宝石ガチャ】【福袋まとめて購入割引】
Sold out [Available at 10 PM on December 21st] Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%) [Multiple purchase discounts available]
Sold out [Available at 10 PM on December 20th] Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out [Available at 10 PM on December 20th] Limited Edition 10 Stones Rare Stone Gacha💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and More! Discounts Available for Multiple Purchases
Sold out [On Sale 12/21 10 PM] {Limited Remaining} Red Gemstone Gacha Including Pigeon Blood Ruby AIGS Worth ¥60,000 💎 Rubies and Hot Pink Sapphires {Multiple Purchase Discounts Available}
Sold out [On sale at 10 PM on December 20th] [Limited to 11 stones] Diamond Gacha including VVS/4mm, VS/3mm, etc. worth ¥40,000 [Multiple purchase discounts available]
Sold out [/ On sale at 10pm] [Limited to 18 stones] Zircon Gacha - Win Koshu Precious Stones, Clover In, and Sakura Shapes [Multiple purchase discounts available]
Sold out [12/19 10 PM Sale] [Limited to 10 Stones] Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More Bicolor Gacha 💎 Single Loose Stone [Multiple Purchase Discounts Available]
Sold out [Available at 10 PM on December 13th] Limited to 9 stones: Australian Black Opal (including semi-black opal) Loose Stone Gacha (Includes 1 bonus white opal) [Multiple purchase discounts available]
Sold out 【12/7 22時販売】《限定10石》ブルー宝石ガチャ💎ブラジル産パライバトルマリン0.142ct・ジンバブエ産ユークレース・1.17ctのコバルトスピネル(鑑別書付:カラーシフト)・ベニトアイトなど《複数購入割引有》

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.

KARATZ・Five Commitments

So that more people can feel closer to jewellery and enjoy it easily.
We will introduce KARATZ's thoughts on products, the attention to detail and efforts in selecting gemstones and creating jewelry.

KARATZ's Initiatives and Social Contributions

We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.

KARATZ Books

These are books that KARATZ has been involved in writing, supervising, and planning. They are all books that allow you to enjoy gemstones from various angles. You can also purchase them directly.

jeweler's tools

For those who want to enjoy jewelry more but don't know what tools to use, we will introduce tools that are also used by KARATZ staff. You can also purchase them directly.