Birthstone list
Brazilian Aquamarine 0.223ct Loose Stone
Sale price¥8,800
Brazilian Aquamarine 0.238ct Loose Stone (Princess Cut)
Sale price¥5,980
Brazilian Aquamarine 0.255ct Loose Stone
Sale price¥6,980
Brazilian Aquamarine 0.463ct Loose Stone
Sale price¥6,980
Brazilian Aquamarine 0.239ct Loose Stone (Princess Cut)
Sale price¥8,800
Brazilian Aquamarine 0.228ct Loose Stone
Sale price¥6,980
Brazilian Aquamarine 0.214ct Loose Stone (Princess Cut)
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.391ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.643ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.511ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.734ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 4.5mm/0.394ct Loose Stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.380ct Loose Stone
Sale price¥5,980
Tanzanian Rhodolite Garnet 0.336ct Loose Stone
Sale price¥6,980
American Peridot 5.1mm/0.566ct Loose Stone
Sale price¥9,800
American Peridot 4.9mm/0.488ct Loose Stone
Sale price¥8,800
American Peridot 4.5mm/0.370ct Loose Stone
Sale price¥8,800
Brazilian Aquamarine 0.259ct Loose Stone
Sale price¥6,980
Sri Lankan star sapphire 2.062ct loose
Sale price¥12,800
Green tourmaline 0.305ct loose stone
Sale price¥3,980
Bicolor tourmaline 1.440ct loose
Sale price¥9,800
Sri Lankan tourmaline 4.860ct loose stone (cushion cut)
Sale price¥12,800
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
Rubellite from Mozambique 0.748ct loose
Sale price¥9,800
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
Tanzanian Lavender Tanzanite 2.219ct Loose Stone
Sale price¥55,800
Ruby from Greenland 0.307ct loose with certificate
Sale price¥15,800
Paraiba tourmaline from Mozambique 1.481ct loose (CuO:0.3%, MnO:4.3%)
Sale price¥158,000
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
Tanzanite from Tanzania 0.350ct loose stone
Sale price¥8,800
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.