![[On sale at 10 PM on 6/21] Sapphire Gacha💎 with a chance to win one of 12 limited cornflower blue sapphires with AIGS certification. Comes with a trillion-cut sapphire bonus. (Multiple purchase discount available)](http://store.karatz.jp/cdn/shop/files/45_75d03d61-7075-4fab-8847-80c7faf27910.png?v=1781499622&width=1890)
![[On Sale June 6th, 10 PM JST] 11-Piece Limited Edition Madagascar Sapphire Gacha (Including bi-color and silky varieties, 3.5-5.4mm) [Multi-buy discount available]](http://store.karatz.jp/cdn/shop/files/P1010258_f7dc9e7a-ba96-4f16-b0cc-3597b42b15e9.jpg?v=1780475574&width=4000)
![[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/collage_fbc9c12a-d5e0-4c94-9d20-bbfb36fad717.png?v=1781513378&width=3000)
![[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/collage_532a76cb-8ad0-4f4f-a177-0547aa0bef7a.png?v=1781512599&width=3000)
![[On sale June 21st at 10 PM] Ruby Gacha (with synthetic ruby as a bonus) including two pigeon blood rubies with appraisal certificates (limited to 15 stones) - Multiple purchase discount available](http://store.karatz.jp/cdn/shop/files/46_64e5d430-259e-4ae1-9011-7948956733ef.png?v=1781501306&width=1890)
![[22602647 listed] [Colorful] K18 Blue Sapphire Ring](http://store.karatz.jp/cdn/shop/files/P6170249_023d09e9-47a9-4960-a368-6de881b8189f.jpg?v=1782283514&width=3098)
[22602647 listed] [Colorful] K18 Blue Sapphire Ring
Sale price¥128,000
0.165ct Unheated Silky Pink Sapphire from Vietnam
Sale price¥5,980
Colombian pyrite emerald 3.817ct loose stone
Sale price¥59,800
Sri Lankan Star Sapphire 7.111ct Loose
Sale price¥59,800
Sri Lankan Star Sapphire 6.477ct Loose
Sale price¥49,800
Greenland sapphire 0.592ct loose stone
Sale price¥18,800
[On sale June 2 at 10 PM] Loose Diamond 3.7mm/0.197ct (H, VS-1, Good)
Sale price¥29,800
Sri Lankan Blue Sapphire 0.519ct Loose
Sale price¥14,800
Madagascar pink sapphire 0.243ct loose stone
Sale price¥8,800
Madagascar pink sapphire 0.346ct loose stone
Sale price¥15,800
Madagascar Blue Sapphire 0.302ct Loose
Sale price¥15,800
Madagascar Yellow Sapphire 4.4mm/0.417ct Loose
Sale price¥14,800
Madagascar Green Sapphire 0.253ct Loose
Sale price¥9,800
Color change sapphire 0.473ct loose stone (purple sapphire)
Sale price¥25,800
Yellow Opal 0.372ct Loose (Faceted Cut)
Sale price¥8,800
[Sale on June 13th at 10 PM] Ruby 0.820ct Loose Stone - Hogikyo
Sale price¥39,800
[On sale June 7, 10 PM] Untreated Blue Sapphire 2.430ct Loose Gemstone GIA
Sale price¥258,000
[On sale June 8th, 10 PM] Bi-Color Sapphire 1.040 ct Loose Gemstone GIT
Sale price¥29,800
Mexican Opal 0.854ct Loose
Sale price¥5,980
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.