Brazilian dumortierite in quartz 5.154ct loose
Sale price¥15,800
Brazilian dumortierite in quartz 6.727ct loose
Sale price¥25,800
Brazilian Topaz Cat's Eye 8.781ct Loose Stone
Sale price¥8,800
Brazilian Topaz Cat's Eye 7.869ct Loose Stone
Sale price¥8,800
Maushitsit (Mawsissi) from Myanmar 5.796ct loose
Sale price¥6,980
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Synthetic Moissanite 13.5mm/8.950ct Loose
Sale price¥39,800
Mexican fire agate 8.69ct loose
Sale price¥14,800
Mexican fire agate 5.86ct loose
Sale price¥14,800
[Koshu Precious Stone Cut] Hematite in Quartz 5.155ct Loose Patch
Sale price¥45,800
Colombian fluorite 6.327ct loose stone
Sale price¥25,800
Colombian fluorite 5.903ct loose stone
Sale price¥18,800
Spanish Sphalerite 12.5mm/9.860ct Loose Stone
Sale price¥98,000
Bicolor Sapphire 5.640ct Loose Stone with Certificate
Sale price¥98,000
Brazilian rutilated quartz (rutilated quartz) 7.741ct loose stone
Sale price¥15,800
Spanish Sphalerite 11mm/7.286ct loose stone
Sale price¥98,000
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 6.020ct Loose Stone
Sale price¥9,800
Congo hemimorphite 9.849ct loose stone
Sale price¥49,800
Myanmar Musgravite/Spinel 8.005ct Loose Stone Japan-Germany
Sale price¥98,000
Kunzite from Afghanistan 8.609ct loose stone
Sale price¥14,800
Mexican Cantera Opal 6.112ct Loose
Sale price¥59,800
Cambodian Blue Zircon (Ratanakiri Blue) 6.771ct Loose
Sale price¥168,000
Brazilian bicolor tourmaline 7.445ct loose stone
Sale price¥69,800
Synthetic Black Opal 5.013ct Loose
Sale price¥59,800
6.392ct Bicolor Sphalerite Loose Stone from Spain
Sale price¥69,800
Afghanistan Bicolor Beryl 9.100ct Loose Stone
Sale price¥34,800
Afghanistan Bicolor Beryl 9.490ct Loose Stone
Sale price¥29,800
Sri Lankan Star Sapphire 7.976ct Loose
Sale price¥98,000
Australian Boulder Opal 6.160ct Loose
Sale price¥18,800
Garden quartz 8.690ct loose
Sale price¥2,980
Euclase from Colombia 5.223ct Ruth Japanese German edition
Sale price¥198,000
![[Koshu Precious Stone Cutting] Fluorite in Quartz 6.420ct Loose Stone [Collaboration] Patch](http://store.karatz.jp/cdn/shop/files/collage_3269a09e-f7e8-4625-a34c-9b27a3584d4b.png?v=1746103198&width=2000)
Montana Agate 6.534ct Loose Stone
Sale price¥6,980
Brazilian Green Spodumene 6.484ct Loose Stone
Sale price¥29,800
Colombian emerald 8.90ct rough stone
Sale price¥45,800
![[Koshu Precious Stone Cut] Scololite 5.350ct Loose Stone Patch](http://store.karatz.jp/cdn/shop/products/5350ct-167321_92a3d322-8cea-4718-867a-da0305e9cb8e.jpg?v=1745070984&width=1032)
[Koshu Precious Stone Cut] Scololite 5.350ct Loose Stone Patch
Sale price¥39,800
Kunzite from Afghanistan 7.741ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 6.227ct loose stone
Sale price¥69,800
Illusion Pink Tourmaline (Iridescent Tourmaline) 5.308ct Loose Stone
Sale price¥69,800
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.