Brazilian Swiss Blue Topaz 11.536ct Loose
Sale price¥14,800
Brazilian Swiss Blue Topaz 10.958ct Loose
Sale price¥14,800
Quartz 15.493ct loose patch
Sale price¥9,800
[Sakura Incut] Brazilian Blue Topaz 16mm/15.329ct Loose Patch
Sale price¥39,800
Colombian pyrite in emerald 15.291ct loose
Sale price¥1,000,000
Colombian emerald rough stone 37.764ct (Gachala mine)
Sale price¥598,000
Brazilian Limonite in Topaz 20.777ct loose stone
Sale price¥39,800
Ethiopian Opal 41.967ct Rough Stone
Sale price¥33,800
Ethiopian Opal 24.319ct Rough Stone
Sale price¥19,800
Ethiopian Opal 15.845ct Rough Stone
Sale price¥15,800
Ethiopian Opal 14.344ct Rough Stone
Sale price¥14,800
Tanzanian Almandine Garnet 34.581ct Loose Stone
Sale price¥158,000
Peruvian Rhodochrosite 2-stone set 12.816ct rough stone
Sale price¥15,800
Brazilian Green Tourmaline 42.854ct Loose Stone
Sale price¥198,000
Congo Dioptase 29.012ct rough stone
Sale price¥5,980
Congo Dioptase 24.371ct rough stone
Sale price¥9,800
Congo Dioptase 24.892ct rough stone
Sale price¥9,800
Congo Dioptase 32.632ct rough stone
Sale price¥15,800
Congo Dioptase 46.537ct rough stone
Sale price¥18,800
Congo Dioptase 52.488ct rough stone
Sale price¥19,800
Congo Dioptase 79.498ct rough stone
Sale price¥31,800
Congo Dioptase 34.022ct rough stone
Sale price¥15,800
Congo Dioptase 85.471ct rough stone
Sale price¥34,800
Brazilian Quartz (Striped Quartz) 15.019ct Loose Patch
Sale price¥8,800
Mexican Cantera Opal 10.927ct Loose
Sale price¥18,800
Mexican Cantera Opal 19.732ct Loose
Sale price¥24,800
Synthetic Opal (Synthetic Black Opal) 10.910ct Loose
Sale price¥69,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Hackmanite from Afghanistan, 27.410ct rough stone
Sale price¥9,800
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
[Takeshi Yamamoto] Rose quartz 25.017ct loose stone
Sale price¥59,800
[Takeshi Yamamoto] Ametrine 20.856ct loose stone
Sale price¥98,000
[Takeshi Yamamoto] Rock crystal 78.580ct loose stone
Sale price¥98,000
Hokkaido Opal 12.492ct Loose Patch
Sale price¥7,980
Brazilian Quartz 13.991ct Loose Patch
Sale price¥9,800
Hackmanite from Afghanistan, 15.600ct rough stone
Sale price¥8,800
Brazilian Bicolor Tourmaline 16.088ct Loose (Tricolor) Nikkei
Sale price¥298,000
Mexican Cantera Opal 11.105ct Loose
Sale price¥12,800
Australian Shell Opal (Shell Opal) 51.801ct Rough Stone
Sale price¥25,800
Brazilian Quartz in Quartz 10.349ct Loose Stone
Sale price¥15,800
Brazilian bicolor tourmaline cat's eye 22.056ct loose stone
Sale price¥198,000
Argentine Inca Rose 15.960ct loose stone
Sale price¥12,800
Argentine Inca Rose 20.650ct loose stone
Sale price¥15,800
Argentine Inca Rose 15.190ct loose stone
Sale price¥12,800
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.