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Gem Gacha

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Ruby 0.258ct loose Sale price¥18,800

coming soon [Available at 10 PM on January 1st] [Limited to 16 stones] Win Cornflower Blue and Royal Blue Sapphires with Certificates of Authenticity in the Blue Sapphire Gacha! [Multiple purchase discounts available]
coming soon [Available at 10 PM on January 1st] Limited Edition 13 Stones Rare Stone Gacha💎 Shinsha, Zimbabwean Euclase, Red Beryl, Kornerupine, Benitoite, and Clinozoisite (Multiple Purchase Discounts Available)
coming soon [Limited to 15 stones] Kornerupine Gacha 💎 Win Tanzanian Kornerupine (Prismatine) with a Japanese-German Appraisal (Multiple purchase discounts available)
Sold out [Available at 10 PM on January 18th] Limited to 14 stones! Big Gem Gacha! Includes 23mm Camellia Cut and 15mm Dandelion Cut stones, guaranteed to be over 5ct. Multiple purchase discounts available.
Sold out [Available at 10 PM on January 12th] Limited to 10 Blue Rare Stones Gacha💎 (Brazilian Paraiba Tourmaline, Indigolite Tourmaline, Benitoite, and Cobalt Spinel) [Multiple Purchase Discounts Available]
Sold out Panda Cut Gacha💎 Brazilian Paraiba Tourmaline (0.226ct/CuO: 0.7%, MnO: 2.5%) - 1 Stone, 5 Panda Cut Stones (Multiple Purchase Discounts Available)
Sold out [Available at 10 PM on January 11th] Limited to 6 stones: Loose Sunstone Gacha (average 1.60 carats) including an 8.0mm camellia-cut Oregon sunstone. Discounts available for multiple purchases.
Sold out Blue Stone Gacha💎 (Brazilian Paraiba Tourmaline, Mozambique Paraiba Tourmaline, German Auchenite, Benitoite) {Multiple Purchase Discounts Available}
Sold out [Available at 10 PM on January 10th] Limited Edition Pink Diamond Gacha! 13 Diamonds 💎 Includes Fancy Colors and Princess Cuts, Normally ¥49,800. Discounts available for multiple purchases.
Sold out [On Sale at 10 PM on January 12th] Limited to 15 Stones! Rare Stone Gacha! 98,000 Yen: Oil-Free Red Beryl with GIA, Shinsha, Paraiba Tourmaline from Mozambique, Benitoite, and More! Discounts Available for Multiple Purchases!
Sold out [Available at 10 PM on January 11th] Limited Quantities! January Campaign Gem Gacha! Green Diamonds, Hot Pink Spinel, and More, Normally ¥39,800! Multi-Purchase Discounts Available!
Sold out [Available at 10 PM on January 10th] Zoisite Gacha with Certificate of Authenticity (Includes Pink Zoisite, Yellow Zoisite, Green Zoisite, and Tanzanite, 5mm) [Multiple Purchase Discounts Available]
Sold out [On sale 1/9 at 10 PM] Diamond Gacha including VVS-1/H&C sorting (multiple purchase discounts available)
Sold out [Available at 10 PM on January 2nd] [Limited to 11 stones] Bicolor Gacha (Includes Zimbabwean Bicolor Euclase, Bicolor Sapphire, and Bicolor Zoisite) [Multiple purchase discounts available]
Sold out [Available at 10 PM on January 3rd] Limited to 13 stones: Beryl Gacha (including Koshu Kiriko Aquamarine Vortex Cut) 1 loose stone [Multiple purchase discounts available]
Sold out [Available at 10 PM on January 4th] Limited Edition of 12 Rare Stones: 0.22ct Brazilian Paraiba Tourmaline (with sorting), Euclase from Zimbabwe, Paraiba Tourmaline from Mozambique, Benitoite, Axinite, and Cinnabar (Multiple Purchase Discounts Available)
Sold out Limited to 15 stones: Blue Stone Gacha (0.157ct Paraiba Tourmaline from Brazil, 3.5mm Apatite from Germany, Top-Quality Benitoite, 4.5mm Paraiba Tourmaline in Quartz, Custom-Cut Aquamarine) (Multiple Purchase Discounts Available)
Sold out Limited to 20 stones: Neon-colored Paraiba gacha containing Brazilian Paraiba tourmaline (CuO: 2.3%, MnO: 2.6%). Multiple purchase discounts available.
Sold out Limited Edition of 7 Montana Sapphires (Rock Creek Mine) Gacha (Pear Shape, Approx. 5 x 3mm) [Multiple Purchase Discounts Available]
Sold out Limited to 10 stones! Rare Stone Gacha! 💎 Shinsha, Zimbabwean Euclase, Red Beryl, Star Peridot, and more. Multi-buy discounts available.
Sold out Red Gemstone Gacha including Pigeon Blood Ruby AIGS worth ¥60,000 💎 Ruby and Hot Pink Sapphire (Multiple Purchase Discounts Available)
Sold out Limited to 11 stones: Diamond gacha including VVS/4mm, VS/3mm, etc. worth ¥40,000. Discounts available for multiple purchases.
Sold out [On sale until 10 PM] Limited to 10 stones: Yamamoto Cut Gacha, featuring carnelian, lemon quartz, rock crystal, and more. Discounts available for multiple purchases.
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 Limited to 10 stones! Zimbabwean Bicolor Euclase, Bicolor Sapphire, and More! Bicolor Loose Stones! 💎 Single Loose Stones Available. Discounts Available for Multiple Purchases.

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.