![[Sales Start: May 5th, 10 PM JST] Limited 12 Stones - Alexandrite Gacha with Alexandrites from Different Origins, including Russian Alexandrite (normally 69,800 JPY), plus a bonus Sri Lankan Chrysoberyl crystal. Multiple purchase discount available.](http://store.karatz.jp/cdn/shop/files/collage_5a6f127c-f435-4118-96c7-e2519cfa5cc0.png?v=1777629286&width=2250)
![Limited to 15 stones! Green Oregon Sunstone rough stone from the United States 💎 Average 1.5ct [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010641_f4c7d555-3bb5-449a-8005-44d9c3c16e9b.jpg?v=1725593703&width=4000)
Additional fee +6,000 yen
Sale price¥6,000
![Limited to 10 stones: London Blue Diamond Gacha Loose Stone (including 3.6mm, VS-SI grade equivalent, treated) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_5cc919d9-d5b1-4919-a90d-b48f34201472.png?v=1776419053&width=2250)
![[Sale at 10 PM on May 6th] Limited to 9 stones: Untreated Bicolor or Sky Blue Topaz Single Stone Gacha (Brazilian) [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/P1010905_01e2d8c6-7a0f-4008-afe2-bc20355d9603.jpg?v=1777629558&width=4000)
![[Sale starts May 2nd, 10 PM JST] 《Limited to 9 Stones》Rare Round Cabochon Cut Sri Lankan Star Sapphire (Approx. 5.0mm) 《Multi-item Discount Available》](http://store.karatz.jp/cdn/shop/files/P1010056_6988cdc8-8729-493d-a408-30be8d1b73ec.jpg?v=1777521383&width=4000)
![[On sale from Wednesday, April 29th at 10 PM] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration Mini Character Acrylic Keychain](http://store.karatz.jp/cdn/shop/files/OEM-20260213-ACK-01.jpg?v=1775529096&width=3889)
![[Available at 10 PM on February 2nd] Limited to 10 stones! Takeshi Yamamoto Cut Gemstone Gacha! Fire Flower Cut Rock Crystal and More! Discounts Available for Multiple Purchases!](http://store.karatz.jp/cdn/shop/files/2_6095cbcb-0dd3-4ab7-94b4-b22228432a93.png?v=1772620329&width=2000)
![[Limited to 24 stones] Oregon Sunstone from America with beautiful Schiller (Oval cut, 5 x 7mm) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/collage_89b7e3fa-b766-4144-821d-3cb2934c389d.png?v=1769209815&width=2250)
![[Limited to 18 stones] [Mr. KEN] 1 stone loose Andalusite from Spain (Rose cut, 4.0mm) [Multiple purchase discount] [Yuichiro Abe's work motif]](http://store.karatz.jp/cdn/shop/files/collage_cd13e4f3-2d31-4d02-b9d3-66c868acfcc9.jpg?v=1706791241&width=4000)
![[Sales start: Wednesday, April 29, 10:00 PM JST] TV Anime "Dr. STONE" x KARATZ Jewelry Store Collaboration Acrylic Keychain](http://store.karatz.jp/cdn/shop/files/OEM-20260115-ACK-01.jpg?v=1775451459&width=3889)
![Limited to 7 stones: Brazilian Limonite in Quartz, 1 loose stone (average 6 carats) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_10790d8c-055f-404e-b91b-4dc8a6f1ff16.png?v=1756029326&width=2000)
![Limited to 4 stones: 1 peridot (Flanders cut) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P1010034_c266f18c-8a8f-48c1-8bf0-9b5c098111b7.jpg?v=1754627168&width=4000)
Additional charge for resizing: 7,500 yen
Sale price¥7,500
Synthetic Rutile 0.554ct Loose
Sale price¥8,800
Opal 0.123ct loose stone
Sale price¥5,980
![[Limited to 10 stones] Inca Rose from Argentina (Rhodochrosite, average 1.5ct) [Multiple purchase discount available]](http://store.karatz.jp/cdn/shop/files/P1010444_a356ce57-480d-45a3-b741-3146e456c136.jpg?v=1729336483&width=4000)
YAG (Yttrium Aluminum Garnet) 3.9mm/0.317ct loose stone
Sale price¥6,980
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.