!["PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Kogami Shinya Model] "Blue Spinel"](http://store.karatz.jp/cdn/shop/files/ca55ad9a7680a3c3acf9653316704dc3.png?v=1747953942&width=3519)
!["PSYCHO-PASS" x KARATZ Collaboration Jewelry: Public Safety Bureau Criminal Investigation Division Device Image Ring - Enforcer Design [Yayoi Rokuitsuka Model] "Ice Blue Sapphire"](http://store.karatz.jp/cdn/shop/files/f76800a131d00c2a53ddcb66deb272d4.png?v=1747953940&width=3519)
![[Limited to 12 stones] 1 stone loose Oregon sunstone cut like Shimizu Precious Stones + special patch [Discount available for multiple purchases]](http://store.karatz.jp/cdn/shop/files/P1120138.jpg?v=1705057831&width=4000)
![[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_50cccb1a-7282-4487-ae6d-b6447e9885ee.png?v=1785119892&width=3000)
![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)
![[Available from 10/22] <<limited to stones>> Tanzanian Winza Sapphire, Avg. 0.47ct <<multi-purchase discount available>></multi-purchase></limited>](http://store.karatz.jp/cdn/shop/files/collage_3491990c-c886-4740-824c-edc3c5228775.png?v=1792227669&width=2000)
[Available from 10/22] <> Tanzanian Winza Sapphire, Avg. 0.47ct <>
Sale price¥7,980
![[On sale 10/30 at 22:00] 《Limited to 9 stones》 1 Iolite Sunstone loose stone from India (average 0.70ct) 《Multiple purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_2b006162-3b5c-439b-b582-bdff30c42e76.png?v=1791682080&width=2000)
![[Available 11/1 at 10 PM] 《Limited 9 pieces》 Indian Iolite Sunstone loose stone (avg. 0.70ct, pear-shaped cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/collage_f453805f-efe0-4cb6-9064-b8b6860ac31c.png?v=1791682551&width=2000)
![[On sale August 21st, 10 PM] "Limited to 20 stones" Sri Lankan Ratnapura Green Zircon Single Stone Loose Gemstone "Bulk purchase discount available"](http://store.karatz.jp/cdn/shop/files/P8070258.jpg?v=1787095598&width=4000)
![[Available 11/1 at 10 PM] 《7 stones limited》 Synthetic Cobalt Spinel (by Mr. Saint-Ger, 3mm hexagonal cut) 《Multi-buy discount available》](http://store.karatz.jp/cdn/shop/files/2026-10-1111.00.09.png?v=1791684034&width=1246)
![[Sales start 8/13 10 PM] Limited to 12 Stones! Beryl Gacha where you can win a 12mm camellia-cut Limonite in Beryl or Santa Maria Aquamarine with a certificate of authenticity for 45,800 yen. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/collage_42474086-f487-4265-a1d0-33fa7887cdea.png?v=1786090469&width=2000)
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.