![[On sale July 12th at 10 PM] "Limited to 15 Stones" All stones with GIA certificate. Madagascar Grandidierite 1 stone loose (average 0.065ct) "Multiple purchase discount available"](http://store.karatz.jp/cdn/shop/files/collage_efaaa09c-4887-4d33-aeac-cd0ee5d3debd.png?v=1783774249&width=3000)
![[Sale starts 10PM on July 12] Limited 20 Stones: Grandidierite Single Stone Loose (Avg. 0.035ct) from Madagascar [Multiple Purchase Discount Available]](http://store.karatz.jp/cdn/shop/files/P1010204_84a103a6-08e3-4e4b-9b0e-76f8bdade994.jpg?v=1783772930&width=4000)
![[Listed as 12563740] Madagascar Grandidierite 0.171ct Loose Stone](http://store.karatz.jp/cdn/shop/files/P7102074_d4ae8afe-89f5-48a0-a1ee-9d0498b9f6d9.jpg?v=1783921764&width=2188)
[Listed as 12563740] Madagascar Grandidierite 0.171ct Loose Stone
Sale price¥29,800
![[Sales start July 11th, 10 PM JST] 《Limited to 11 stones》 Madagascar Apatite Single Stone Loose (UV fluorescent type, average 1.0ct) 《Bulk purchase discount available》](http://store.karatz.jp/cdn/shop/files/collage_9ebca466-92b9-498e-9068-a39188c70a00.png?v=1783678634&width=3000)
[Listed 12563403] Petzottaite from Madagascar 0.200ct Loose
Sale price¥29,800
Padparadscha Sapphire 0.560ct Loose Stone
Sale price¥75,800
Madagascar sapphire 0.448ct loose stone
Sale price¥15,800
![[Sales begin 6/20 10 PM] Limited to 12 Stones: Madagascar Andesine & Labradorite (Rainbow Moonstone & Blue Moonstone) 2-Stone Set (Average 0.60ct) - Multiple Purchase Discount Available](http://store.karatz.jp/cdn/shop/files/collage_702c53e9-00d8-4097-9b45-09aefac43fc6.png?v=1781597688&width=3000)
Spessartite Garnet from Madagascar 1.053ct loose stone
Sale price¥29,800
![[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)
Madagascar Green Sapphire 0.253ct Loose
Sale price¥9,800
Madagascar Yellow Sapphire 4.4mm/0.417ct Loose
Sale price¥14,800
Madagascar Blue Sapphire 0.302ct Loose
Sale price¥15,800
Madagascar pink sapphire 0.346ct loose stone
Sale price¥15,800
Madagascar pink sapphire 0.243ct loose stone
Sale price¥8,800
Madagascar sphene 0.838ct loose stone
Sale price¥9,800
Yellow sapphire 0.287ct loose stone
Sale price¥8,800
Pink sapphire 0.202ct loose stone
Sale price¥8,800
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.