![[On sale August 13th at 10 PM] Limited to 13 stones: 1 Indian Iolite Sunstone Gacha Stone (Long Hexagonal Cut or Pentagonal Cut) Average 0.35ct (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_ef38dd5f-55b6-45d5-8bda-690555ce1215.png?v=1786485076&width=2000)
![[On sale 8/12, 10 PM] "Limited to 10 stones" Strong Fire Gem Gacha featuring 3mm Benitoite and Blue Zircon, normally 42,800 yen (multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_278d67ff-f62b-4a8b-9e44-16602ef86502.png?v=1786093945&width=2000)
![[On sale 8/14 at 10 PM] Limited to 10 Stones: Rhodolite Garnet Gacha with a chance to win a "Dandelion Cut 9mm" collaboration with Shimizu Kiseki, normally 35,800 yen (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_abed9b2b-ac4c-4452-88c2-7d77a5f3cf83.png?v=1786091553&width=2000)
![[On sale 7/22 at 10 PM] Limited to 10 Stones: Sapphire Gacha featuring a Certified Padparadscha Sapphire! (Multiple Purchase Discount Available)](http://store.karatz.jp/cdn/shop/files/collage_9317fd7a-dcb8-4829-b93e-a6afe8ba1fa6.png?v=1784857361&width=3000)
![[Limited to 16 Stones] Yellow Diamond Gacha including Sorting [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/64.png?v=1783912782&width=2268)
![[On Sale June 6th at 10 PM JST] "Limited 13 Stones" Fluorite Gacha including flawed Koshu cut gemstones "Bulk Purchase Discount Available"](http://store.karatz.jp/cdn/shop/files/50_28755117-0a9d-4247-82f9-d24573a88140.png?v=1782350508&width=2268)
![[6/ 10 PM JST release] 《Limited 10 Stones》 Iolite Gacha featuring Koshu-Kiseki-Kiriko plusthree 《Bulk purchase discount available》](http://store.karatz.jp/cdn/shop/files/33_67834c0a-c20f-4b8b-b1d7-d99a08ae58ad.png?v=1782363276&width=1000)
![[On sale May 23rd at 10 PM] "Limited 9 Stones - Shinjuku Pop-Up Celebration" All stones with Central Gem Laboratory sorting (3.0-3.5mm, VS-SI clarity) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/2026-06-2516.42.36.png?v=1782373473&width=1280)
![[Limited to 7 stones] Anthill Garnet 1 stone loose (oval cut, approx. 4x3mm) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/S__242548738.jpg?v=1781589437&width=1477)
![[On sale May 24th at 10 PM] "Limited to 12 Stones" Blue Gemstone Gacha 💎 Brazil Paraiba Tourmaline (CuO: 1.5%, MnO: 3.2%) and Zimbabwe Euclase, normally priced at ¥35,800, and more! (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/P1010002_2b7e0b49-712e-480c-b01b-243e8d925a3e.jpg?v=1781241884&width=4000)
![[Limited to 11 Stones] Madagascar Sapphire Gacha (including bicolor and silky colors, 3.5~5.4mm) [Multi-purchase discount available]](http://store.karatz.jp/cdn/shop/files/P1010258_f7dc9e7a-ba96-4f16-b0cc-3597b42b15e9.jpg?v=1780475574&width=4000)
![[Limited to 7 stones] Kochi Prefecture Blood Coral Loose (Oval Cut, 4x6~7mm) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/P5210043_c0fa32b1-c95e-4019-8fc7-8a9735d549cd.jpg?v=1779352430&width=4000)
![[Limited Quantity Remaining] 《Limited to 12 Stones》Topaz Gacha (including Imperial Topaz) where you can win a Koshu Kiski Kiriko plusthree "Akatsuki" (usually 35,800 yen) 《Multiple Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_4dc08ebc-7ae7-4e78-8a7c-db77db9e24a3.png?v=1777622176&width=2250)
![\[Sales end on Monday, August 31st] Anime "Moriarty the Patriot" x Jewelry Specialty Store KARATZ Collaboration BIG Acrylic Stand](http://store.karatz.jp/cdn/shop/files/BIG__01_02.jpg?v=1777333094&width=3889)
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.
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.