Pink tourmaline cat's eye 3.800ct loose
Sale price¥8,800
Paraiba tourmaline from Brazil 0.224ct loose (CuO:0.8%, MnO:1.7%)
Sale price¥29,800
Paraiba tourmaline from Brazil 0.203ct loose (CuO: 0.9%, MnO: 2.6%)
Sale price¥29,800
Rough diamond (makeable) 0.353ct loose
Sale price¥25,800
Rough diamond (makeable) 0.279ct loose
Sale price¥25,800
Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%)
Sale price¥15,800
Brazilian Paraiba tourmaline 0.448ct raw stone (CuO:2.7%, MnO:2.0%)
Sale price¥19,800
Brazilian Paraiba tourmaline 0.156ct raw stone (CuO:2.5%, MnO:0.5%)
Sale price¥15,800
[Sakura Incut] Sky Blue Topaz 12mm Loose with Patch
Sale price¥39,800
![[Available at 10 PM on August 24th] [Limited to 4 stones] Brazilian Blue Topaz Cat's Eye Loose Stone (7.0-7.5mm) [Multiple purchase discounts available]](http://store.karatz.jp/cdn/shop/files/collage_8bfa0fdf-e296-4b88-babb-a01dd576199f.png?v=1755995326&width=2000)
[12559903] 2.991ct Brazilian Imperial Topaz Loose Stone
Sale price¥158,000
Diamond 0.054ct loose (VS class equivalent, emerald cut)
Sale price¥8,800
Paraiba tourmaline from Brazil 0.054ct loose (CuO:1.2%, MnO:3.1%)
Sale price¥15,800
Paraiba tourmaline from Brazil 0.353ct loose (CuO:0.8%, Mn:3.4%)
Sale price¥39,800
Tourmaline cat's eye 4.790ct loose
Sale price¥6,980
Tourmaline cat's eye 4.590ct loose
Sale price¥12,800
Bicolor tourmaline 0.880ct loose
Sale price¥8,800
Bicolor tourmaline 1.220ct loose
Sale price¥15,800
Diamond 2.810ct rough stone
Sale price¥9,800
[On sale at 10pm on August 19th] Sliced Trapiche Diamond 0.228ct Loose
Sale price¥18,800
[8/8 22:00] Brazilian Dumortierite in Quartz 1.117ct Loose Stone
Sale price¥8,800
Yellow tourmaline 2.290ct loose
Sale price¥8,800
Paraiba tourmaline from Brazil 0.055ct loose (CuO:1.5%,MnO:3.2%)
Sale price¥39,800
Paraiba tourmaline from Brazil 0.066ct loose (CuO:1.7%,Mn0:2.1%)
Sale price¥29,800
Bicolor imperial topaz 1.725ct loose
Sale price¥79,800
Tanzanite 2.726ct loose
Sale price¥110,000
[Dandelion Cut] Danburite 8mm/1.860ct《Collaboration》Loose with patch
Sale price¥19,800
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
Paraiba tourmaline from Brazil 0.252ct loose (CuO:0.9%, MnO:2.0%)
Sale price¥29,800
Tanzanite 2.418ct loose
Sale price¥55,800
Paraiba tourmaline from Brazil 0.265ct loose (CuO:0.7%, MnO:3.0%)
Sale price¥29,800
Pink tourmaline cat's eye 5.460ct loose
Sale price¥8,800
Brazilian Paraiba tourmaline 0.229ct loose (CuO:0.8%, MnO:2.2%)
Sale price¥39,800
[Sakura Incut] Danburite 8.25mm/1.719ct《Collaboration》Loose with emblem
Sale price¥25,800
[Dandelion cut] Danburite 7mm/1.364ct loose with patch
Sale price¥19,800
Brazilian Paraiba tourmaline 96.184ct raw stone
Sale price¥8,800
Colombian trapiche emerald (reverse trapiche) 0.107ct rough stone
Sale price¥9,800
Brazilian Paraiba tourmaline 181.342ct raw stone
Sale price¥9,800
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.