![[On Sale at 10 PM on January 12th] Mozambique Ruby 0.481ct Loose Stone with Certificate of Authenticity](http://store.karatz.jp/cdn/shop/files/P1087819_20d21767-4b37-4d98-877f-e5d67479d672.jpg?v=1767939816&width=2906)
![[On Sale at 10 PM on January 12th] 0.245ct Rough Diamond (with Trigon)](http://store.karatz.jp/cdn/shop/files/P1087915.jpg?v=1768086183&width=4000)
![[On Sale at 10 PM on January 12th] 18K Yellow Gold Brazilian Paraiba Tourmaline 0.048ct Diamond Pinky Ring (CuO: 1.7%, MnO: 2.2%)](http://store.karatz.jp/cdn/shop/files/P1077485.jpg?v=1768089372&width=4000)
![[On Sale at 10 PM on January 12th] K18/Pt950 Brazilian Paraiba Tourmaline 0.071ct Diamond Ring (K18YG, CuO: 1.9%, MnO: 2.2%)](http://store.karatz.jp/cdn/shop/files/P1077515.jpg?v=1768089581&width=4000)
![[On Sale at 10 PM on January 17th] Sri Lankan Yellow Sapphire 0.526ct Loose](http://store.karatz.jp/cdn/shop/files/P1150035.jpg?v=1768480463&width=4000)
![[On Sale at 10 PM on January 17th] Brazilian Bicolor Tourmaline 1.016ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P1150094_f909f9ff-31f9-4a32-8b78-f86b7f4761b0.jpg?v=1768479929&width=3108)
![[Available at 10 PM on February 28th] Limited to 2 stones: One loose Greenland ruby (2.2mm, top color, certificate included) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2250003.jpg?v=1772194045&width=4000)
![[Available at 10 PM on February 28th] Limited to 2 stones: Greenland pink sapphire loose stone (5.0mm, heart shape, certificate included) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/P2250055_92fb3ceb-00e7-4004-9ea0-a69f7eb24dde.jpg?v=1772194584&width=3225)
![[Available at 10 PM on March 1st] Limited to 21 stones! Dominican Republic Conch Pearl & Shell Gacha Loose Stone (including one with a flame pattern) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_a484a33d-75a6-40c5-a0ba-63bf757c7cca.png?v=1772195139&width=2250)
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.