Birthstone list
Russian Demantoid Garnet (Horsetail) 0.256ct Loose Stone
Sale price¥79,800
Greenland Ruby 0.360ct Loose Stone with Certificate
Sale price¥69,800
Mozambique Rhodolite Garnet 0.835ct Loose Stone
Sale price¥12,800
Brazilian London Blue Topaz 1.281ct Loose
Sale price¥12,800
Brazilian Elestial Amethyst 1.378ct Loose Stone
Sale price¥12,800
Brazilian Elestial Amethyst 1.586ct Loose Stone
Sale price¥8,800
Vietnamese aquamarine 0.729ct loose stone
Sale price¥8,800
Vietnamese aquamarine 0.574ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.342ct loose stone
Sale price¥7,980
Tanzanite from Tanzania 0.342ct loose stone
Sale price¥7,980
Almandine Garnet 0.348ct Loose Stone
Sale price¥8,800
Rhodolite Garnet 5.3mm/0.703ct Loose Stone
Sale price¥12,800
Mexican Fire Opal 5.8mm/0.345ct Loose Stone
Sale price¥12,800
Brazilian Kasharai Amethyst 5.6mm/0.460ct Loose Stone
Sale price¥8,800
Madagascar Bicolor Sapphire 0.278ct Loose
Sale price¥8,800
Madagascar Bicolor Sapphire 0.324ct Loose
Sale price¥9,800
Brazilian Kasharai Amethyst 0.314ct Loose Stone
Sale price¥9,800
Brazilian bicolor tourmaline 1.056ct loose
Sale price¥12,800
Rough diamond (makeable) 0.185ct loose (VS-SI)
Sale price¥19,800
Rough diamond (makeable) 0.345ct loose (VS-SI equivalent)
Sale price¥29,800
Sri Lankan star sapphire 1.061ct loose
Sale price¥3,980
Bicolor tourmaline 5.825ct loose
Sale price¥128,000
Brazilian emerald 3.3mm/0.119ct loose
Sale price¥22,800
Bicolor tourmaline 0.707ct loose
Sale price¥12,800
Goethite in Amethyst 0.806ct loose stone
Sale price¥4,980
Parasite Peridot (Paracytic Peridot) 0.541ct Loose Japanese-German Edition
Sale price¥256,000
Blue tourmaline from Afghanistan 0.209ct loose
Sale price¥2,980
Blue tourmaline from Afghanistan 3.5mm/0.178ct loose
Sale price¥3,980
Yellow tourmaline 0.431ct loose stone
Sale price¥3,980
Brazilian bicolor tourmaline 3.291ct loose
Sale price¥35,800
Brazilian bicolor tourmaline 3.569ct loose
Sale price¥35,800
Bicolor tourmaline 0.669ct loose (rose cut)
Sale price¥8,800
Bicolor tourmaline 0.549ct loose (rose cut)
Sale price¥8,800
Colombian pyrite in emerald 7.836ct loose
Sale price¥398,000
18KPG pink sapphire 0.32ct brown diamond ring
Sale price¥69,800
Mexican Opal (Faceted) 0.242ct Loose
Sale price¥8,800
Brazilian bicolor tourmaline 1.965ct loose stone
Sale price¥18,800
Russian Demantoid Garnet (Horsetail) 3.8mm/0.255ct Loose Stone
Sale price¥39,800
Brazilian Color-Shifting Amethyst 0.849ct Loose Stone
Sale price¥8,800
Brazilian Blue Topaz 5.5mm/0.754ct Loose Stone
Sale price¥5,980
Mozambique Rhodolite Garnet 1.052ct Loose Stone
Sale price¥8,800
Brazilian Alexandrite 0.097ct Loose Stone (Emerald Cut)
Sale price¥38,800
Australian Crystal & White Opal 13-Stone Half Eternity Ring Set (2.0mm)
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.