African bicolor tourmaline 0.950ct loose stone (phantom cut)
Sale price¥9,800
1 stone of green opal from South Africa (discount available for multiple purchases)
Sale priceFrom ¥2,980
African Tourmaline 0.711ct Loose Stone
Sale price¥5,980
South African diamond rough stone 0.330ct
Sale price¥5,980
South African diamond rough stone 0.210ct
Sale price¥8,800
South African yellow diamond (makeable) 0.193ct rough stone
Sale price¥9,800
South African diamond rough stone 0.430ct
Sale price¥9,800
South African Sugilite 0.814ct loose stone
Sale price¥14,800
South African yellow diamond (makeable) 0.159ct rough stone
Sale price¥15,800
South African gray diamond (makeable) 0.169ct rough stone
Sale price¥15,800
South African yellow diamond (makeable) 0.202ct rough stone
Sale price¥17,800
South African Sugilite 7.3mm/1.034ct loose stone
Sale price¥18,800
South African diamond rough (sawable) 0.085ct rough
Sale price¥19,800
South African diamond rough (sawable) 0.091ct rough
Sale price¥22,800
South African diamond rough (sawable) 0.103ct rough (with trigon)
Sale price¥24,800
South African diamond rough (sawable) 0.110ct rough
Sale price¥25,800
South African diamond rough (sawable) 0.083ct rough
Sale price¥32,800
South African diamond rough (sawable) 0.087ct rough
Sale price¥34,800
South African diamond rough (sawable) 0.091ct rough (trigon)
Sale price¥35,800
Rhodochrosite from South Africa 4.2mm/0.409ct loose
Sale price¥39,800
South African diamond rough (sawable) 0.096ct rough (with trigon)
Sale price¥39,800
South African Diamond Rough (Sawable) 0.107ct Rough Trigon
Sale price¥42,800
South African diamond rough (sawable) 0.112ct rough
Sale price¥44,800
South African Rhodochrosite 0.457ct loose stone
Sale price¥45,800
South African diamond rough (sawable) 0.102ct rough (with trigon)
Sale price¥45,800
Rhodochrosite from South Africa 5.2mm/0.645ct loose
Sale price¥55,800
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
South African rhodochrosite 1.333ct loose Japanese-German edition
Sale price¥128,000
South African Rhodochrosite 0.990ct Loose Stone by Nikkei
Sale price¥128,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
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.