Birthstone list
Brazilian copper rutilated quartz 1.381ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.560ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.647ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.352ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.410ct loose stone
Sale price¥8,800
Tanzanian Lavender Tanzanite 0.382ct Loose Stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.498ct Loose Stone
Sale price¥14,800
Colombian oil-free emerald 0.290ct loose stone GIA
Sale price¥198,000
Colombian pyrite in emerald 6.415ct loose stone
Sale price¥298,000
Brazilian Green Tourmaline 12.252ct Loose Stone
Sale price¥398,000
Mexican Cantera Opal 5.204ct Loose
Sale price¥12,800
Emerald 0.308ct loose stone
Sale price¥14,800
Madagascar sapphire 0.377ct loose stone
Sale price¥12,800
Madagascar Yellow Sapphire 0.283ct Loose
Sale price¥6,980
Ethiopian Opal 167.191ct Rough Stone
Sale price¥39,800
Almandine garnet 2.421ct loose
Sale price¥18,800
Mexican Cantera Opal 3.297ct Loose
Sale price¥29,800
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Vietnam Aquamarine 1.309ct Loose Stone
Sale price¥12,800
Brazilian Tourmaline (untreated) 5.120ct loose stone
Sale price¥39,800
Sri Lankan Moonstone 0.561ct Loose
Sale price¥6,980
Sri Lankan Moonstone 1.959ct Loose
Sale price¥12,800
Tanzanite from Tanzania 0.466ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.491ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.334ct loose stone
Sale price¥9,800
Amazon Green Opal 0.285ct Loose (Faceted Cut)
Sale price¥6,980
Amazonian green opal 0.517ct loose stone (faceted cut)
Sale price¥8,800
Amazon Green Opal 0.814ct Loose (Faceted Cut)
Sale price¥8,800
Brazilian pink tourmaline 1.458ct loose stone
Sale price¥39,800
Sri Lankan glass body (sapphire crystal) 10.140ct rough stone
Sale price¥29,800
Sri Lankan glass body (sapphire crystal) 7.983ct rough stone
Sale price¥29,800
Australian Shell Opal (Shell Opal) 73.321ct Rough Stone
Sale price¥49,800
Brazilian bicolor tourmaline 6.928ct loose stone (bicolor blue tourmaline)
Sale price¥298,000
Brazilian Green Tourmaline 26.071ct Loose Stone (Sugarloaf Cut)
Sale price¥298,000
Colombian pyrite emerald 13.691ct loose stone
Sale price¥398,000
Tanzanite from Tanzania 0.262ct loose stone
Sale price¥8,800
Russian rough diamond (sawable) 0.098ct loose
Sale price¥24,800
Colombian Trapiche Emerald 0.299ct Loose
Sale price¥16,800
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.