Green opal 15.950ct loose
Sale price¥29,800
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
Cantera opal 14.581ct loose
Sale price¥22,800
Opal 21.584ct loose Japanese and German
Sale price¥8,800
Bicolor sapphire 0.853ct loose stone
Sale price¥9,800
Montana Sapphire 1.9mm/0.033ct loose
Sale price¥4,980
Montana Sapphire 2.8mm/0.098ct Loose Stone (Yellow)
Sale price¥6,980
Pink sapphire from Greenland 0.754ct loose with certificate
Sale price¥25,800
Ruby from Greenland 0.268ct loose with certificate
Sale price¥18,800
Yellow sapphire from Sri Lanka 6mm/0.816ct loose
Sale price¥18,800
Yellow sapphire from Sri Lanka 6mm/0.962ct loose
Sale price¥18,800
Black opal 2.293ct loose
Sale price¥98,000
Mexican Hyalite Opal 1.587ct Loose
Sale price¥9,800
Mexican Cantera Opal 4.456ct Loose
Sale price¥39,800
0.324ct loose pink sapphire from Madagascar
Sale price¥12,800
Madagascar sapphire 0.298ct loose stone
Sale price¥12,800
Madagascar sapphire 0.503ct loose stone
Sale price¥15,800
Sri Lankan star sapphire 2.062ct loose
Sale price¥12,800
Mexican cantera opal 8.454ct loose
Sale price¥3,980
American Benitoite 0.100ct Loose Stone (Emerald Cut)
Sale price¥32,800
Mexican cantera opal 12.401ct loose
Sale price¥8,800
Diamond (cabochon cut) 0.196ct loose
Sale price¥29,800
Mexican cantera opal 14.740ct loose
Sale price¥14,800
Ruby from Greenland 0.307ct loose with certificate
Sale price¥15,800
Mexican Fire Opal 5mm/0.342ct Loose (Contralus Opal)
Sale price¥9,800
Mexican Cantera Opal 2.661ct Loose
Sale price¥12,800
South African diamond rough stone 0.430ct
Sale price¥9,800
Mexican Cantera Opal 1.209ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.394ct Loose Stone (Rose Cut)
Sale price¥12,800
Mexican Cantera Opal 1.436ct Loose Stone (Rose Cut)
Sale price¥12,800
Colombian emerald 0.202ct loose stone
Sale price¥59,800
Mexican Cantera Opal 8.331ct Loose
Sale price¥39,800
Mexican Fire Opal (Faceted Cut) 0.844ct Loose
Sale price¥15,800
Sri Lankan Yellow Sapphire 0.320ct Loose
Sale price¥15,800
Mexican Hyalite Opal 0.942ct Loose
Sale price¥9,800
Mexican Hyalite Opal 6.0mm/0.708ct Loose
Sale price¥25,800
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Mexican Fire Opal 1.348ct Loose
Sale price¥15,800
Bicolor sapphire 0.301ct loose
Sale price¥18,800
Madagascar Bicolor Sapphire 0.232ct Loose
Sale price¥15,800
Mexican Fire Opal 0.448ct Loose
Sale price¥3,980
Sri Lankan bicolor sapphire 1.020ct loose stone
Sale price¥59,800
Colombian emerald 0.203ct loose stone with certificate
Sale price¥98,000
Ethiopian Opal 7.2mm/0.910ct Loose Stone
Sale price¥6,980
Sri Lankan Cat's Eye Sapphire 2.177ct Loose
Sale price¥98,000
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.