Goshenite 1.989ct loose
Sale price¥25,800
Dendritic Agate 2.964ct loose
Sale price¥15,800
Diaspore 1.209ct loose from Türkiye
Sale price¥21,800
Diaspore from Türkiye 0.858ct loose
Sale price¥21,800
Diaspore from Türkiye 0.636ct loose
Sale price¥15,800
Brazilian kyanite in quartz 4.770ct loose
Sale price¥16,800
Sphene from Madagascar 1.899ct loose
Sale price¥24,800
Sphene from Madagascar 1.476ct loose
Sale price¥18,800
Brazilian dumortierite in quartz 3.901ct loose
Sale price¥19,800
Brazilian Medusa Quartz (Paraiba Quartz) 6.954ct loose
Sale price¥17,800
Bicolor Zoisite 1.210ct loose
Sale price¥19,800
Unheated silky pink sapphire from Vietnam 0.197ct loose
Sale price¥12,800
Unheated silky pink sapphire from Vietnam 0.247ct loose
Sale price¥12,800
Star garnet 14.400ct loose
Sale price¥11,000
Star garnet 14.600ct loose
Sale price¥11,000
Brazilian Medusa Quartz (Paraiba Quartz) 10.298ct loose
Sale price¥14,800
Brazilian dumortierite in quartz 9.490ct loose
Sale price¥25,800
Brazilian dumortierite in quartz 4.263ct loose
Sale price¥12,800
Brazilian dumortierite in quartz 4.180ct loose
Sale price¥12,800
Russian demantoid garnet (horsetail recognized) 3.7mm/0.231ct loose
Sale price¥22,800
Russian demantoid garnet (horsetail recognized) 3.8mm/0.232ct loose
Sale price¥18,800
[Rouge cut] Almandine garnet 4.632ct loose
Sale price¥15,800
[Rouge cut] Almandine garnet 3.214ct loose
Sale price¥15,800
[Rouge cut] Almandine garnet 2.661ct loose
Sale price¥12,800
Mexican cantera opal 12.610ct loose
Sale price¥29,800
Almandine garnet 2.964ct loose
Sale price¥15,800
Sphene from Madagascar 1.853ct loose
Sale price¥24,800
Bicolor chrysoberyl from Madagascar 1.753ct loose
Sale price¥26,800
Bicolor chrysoberyl from Madagascar 1.590ct loose
Sale price¥23,800
Bicolor chrysoberyl from Madagascar 1.003ct loose
Sale price¥15,800
Bicolor chrysoberyl from Madagascar 1.456ct loose
Sale price¥21,800
Bicolor chrysoberyl from Madagascar 1.520ct loose
Sale price¥22,800
[Mr. Takeshi Yamamoto] Rock crystal 43.123ct loose
Sale price¥25,800
Bicolor grossular garnet from Tanzania 2.454ct loose
Sale price¥12,800
Brazilian dumortierite in quartz 4.592ct loose
Sale price¥15,800
Bicolor Zoisite 0.581ct loose
Sale price¥15,800
Brazilian alexandrite 0.112ct loose
Sale price¥13,800
Bicolor tanzanite 0.581ct loose
Sale price¥23,800
Yellow diamond rough stone (makeable) 0.247ct rough stone
Sale price¥22,800
Mexican cantera opal 15.542ct loose
Sale price¥19,800
Mexican cantera opal 9.422ct loose
Sale price¥29,800
Mexican cantera opal 7.563ct loose
Sale price¥19,800
Brazilian Euclase 1.240ct loose
Sale price¥22,800
Tanzanite 1.593ct loose
Sale price¥15,800
Tanzanite 1.297ct loose
Sale price¥12,960
Beryl 0.951ct loose
Sale price¥12,800
Beryl 6.5mm/1.032ct loose stone
Sale price¥12,800
Australian boulder opal 4.470ct loose
Sale price¥29,800
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.