![[Available 9/27 at 10:00 PM] 《Limited to 15 stones》 Brazilian Bicolor Tourmaline (Cabochon Cut) Gacha Loose Stone 《Multi-purchase discount available》](http://store.karatz.jp/cdn/shop/files/P9240082_afd1ff21-66cc-46e6-8ebd-a7c2e5189229.jpg?v=1790391764&width=4000)
![[Available 10/4 at 10 PM] 《Limited to 11 stones》 Garnet Gacha including Russian Demantoid Garnet (normally 69,800 yen) (plus 1 Mint Garnet stone included) 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_11aebb72-52ff-4ef1-aba4-55dceae9ea72.png?v=1790994721&width=2000)
![[Available 9/22, 10 PM] 《Limited to 16 stones》 Amethyst Gacha featuring Shimizu Kikouseki’s Sakura and Dandelion cuts 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/collage_3687d555-9384-411a-85b0-a4b87cd53e60.png?v=1790850508&width=2000)
![[Available 9/26 at 10 PM] <limited quantity> Hong Kong Sourcing Gacha (7 types including Tanzanite, Hauyne, Color-Change Sapphire, Bekily Blue Garnet, etc.) 1 stone (plus 1 Rainbow Obsidian) <multiple purchase discount available></multiple></limited>](http://store.karatz.jp/cdn/shop/files/collage_8875e4dc-dcd3-45fc-bdba-6f34bda41eed.png?v=1790391882&width=2000)
![[On sale 9/18 at 22:00] <limited to stones> Single loose Sri Lankan sapphire (pear-shaped cut, avg. 0.25ct) <multi-buy discount available></multi-buy></limited>](http://store.karatz.jp/cdn/shop/files/P9090106_8608f520-da32-4c08-9862-78d94c76d481.jpg?v=1789650615&width=4000)
![[Available 9/12 at 10 PM] 《Limited to 10 stones》 Gemstone Gacha featuring top-color benitoite (regularly 32,800 yen), Saint-J blue zircon, and other gems with beautiful fire 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_cef71878-5df4-47a3-9161-a0110c6af502.png?v=1789017207&width=2000)
![[On sale 9/5 at 10 PM] <4 stones limited> Rose-cut turquoise (Imperfect cut by Mr. Saint-Germain, max 12mm) <multiple purchase discounts available></multiple>](http://store.karatz.jp/cdn/shop/files/P9011075.jpg?v=1788570197&width=4000)
![[Sales start 8/29 at 22:00] <limited to stones> Purple Scapolite, including Koshu Kiseki Kiriko Purple Scapolite (regular price 59,800 yen), with 1 free Tanzanite stone by Mr. Sange included <multi-purchase discount available></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_4ea69f7b-122e-4810-9296-f1a09323b7b2.png?v=1787921124&width=2000)
![[8/ 10 PM Sale] Amethyst Gacha Featuring Dandelion Cut Gemstones by Shimizu Kisaki - 12 Limited Pieces Available! (Multiple Purchase Discount)](http://store.karatz.jp/cdn/shop/files/2026-08-2717.26.42.png?v=1787819224&width=1285)
![Limited to 10 stones: Madagascar pink sapphire (heart-shaped, including padparadscha color, approximately 3 x 2.3 mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_cc2c84c4-e3e6-456b-a833-65c44967ef99.png?v=1787811529&width=2000)
![[On sale May 29th at 10 PM] "Checker x Sui" Koshu Kiseki Cut Mexican Fire Opal (usually 79,800 yen) Gacha with only 10 stones available. Win a Fire Opal (and receive one Contraluz!). [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/P8190645.jpg?v=1787385497&width=4000)
![[On sale August 23rd at 10 PM] Limited 10 Stones! Amethyst Gacha featuring Koshu-Kiseki-Kiriko-plus-three "Akatsuki" (with one citrine cut by Mr. Sandje) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/collage_f4ace2f9-5fe7-4ba7-ad87-22a174e398a0.png?v=1787354382&width=2000)
![[6/ 10 PM JST Release] 《Limited to 11 Stones》Bicolor Gemstone Gacha featuring Paraiba Tourmaline and Euclase 《Bulk Purchase Discount Available》](http://store.karatz.jp/cdn/shop/files/collage_7b7dc323-95d7-4adf-b87d-7f158eb4b182.png?v=1787295459&width=2000)
![[Available 8/23 at 10 PM] 《13 Sets Only》 Diamond Gacha featuring a set of 2 raw and cut diamonds, including a 0.2ct VS grade diamond 《Multi-purchase discounts available》](http://store.karatz.jp/cdn/shop/files/2026-08-2115.28.22.png?v=1787293728&width=1285)
![[On sale July 20th at 10 PM] "Limited to 13 Stones" Diamond Gacha: Win a FANCY VIVID Yellow Diamond (with sorting report) worth 22,800 yen. One loose stone. (Multiple purchase discount available.)](http://store.karatz.jp/cdn/shop/files/collage_e8634dba-e7a3-4862-b6b3-003b0b13375c.png?v=1786839952&width=2000)
![[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 15 Gems] Forest Green with certificate, normally ¥29,800, Canary Yellow or Ice Blue treated diamond gacha, normally ¥22,800. [Multi-purchase discount available]](http://store.karatz.jp/cdn/shop/files/57.png?v=1783491547&width=1890)
![[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/collage_e24ee4a0-1bb9-4e19-9a6a-6fa75b4cf864.png?v=1782726871&width=3000)
![[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)
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.