Brazilian Amethyst 0.256ct Loose Stone
Sale price¥8,800
Green sapphire 0.607ct loose stone
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.170ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.182ct Loose
Sale price¥9,800
Sri Lankan Golden Sapphire 0.649ct Loose
Sale price¥29,800
Sri Lankan Yellow Sapphire 0.297ct Loose
Sale price¥12,800
Synthetic sapphire 0.879ct loose stone (synthetic blue sapphire)
Sale price¥14,800
0.542ct Loose Leuco Garnet from Myanmar, with certificate
Sale price¥39,800
Cornell pin from Tanzania 0.523ct loose
Sale price¥7,980
Blue zircon 0.397ct loose stone
Sale price¥6,980
Oregon Sunstone 0.976ct loose
Sale price¥18,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥69,800
Bicolor Andesine 6mm/0.756ct loose
Sale price¥12,800
Brazil Indicolite Tourmaline 0.431ct Loose Gemstone with Certificate
Sale price¥29,800
Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition
Sale price¥79,800
Pink tourmaline 0.516ct loose
Sale price¥5,980
American red beryl 2.9mm/0.094ct loose
Sale price¥29,800
Bicolor Andesine 6mm/0.852ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.824ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.699ct loose (color shift)
Sale price¥12,800
Bicolor Andesine 6mm/0.783ct loose (color shift)
Sale price¥12,800
Bicolor tanzanite 0.479ct loose
Sale price¥18,800
Unheated silky pink sapphire from Vietnam 0.426ct loose
Sale price¥9,800
Baddeleyite from Myanmar 0.279ct Ruth Japanese German edition
Sale price¥15,800
Montana Sapphire 3mm/0.155ct loose
Sale price¥18,800
[12545123 published] Yellow Beryl 0.696ct loose
Sale price¥3,980
Pink zoisite from Tanzania 0.536ct loose Japanese German edition
Sale price¥39,800
Paraiba tourmaline from Brazil 0.144ct loose (CuO:0.9%,MnO:2.8%)
Sale price¥55,800
Greenland Ruby 0.253ct Loose Stone with Certificate
Sale price¥49,800
Greenland Ruby 0.266ct Loose Stone with Certificate
Sale price¥22,800
Greenland sapphire 0.133ct loose stone with certificate
Sale price¥14,800
Tanzanian Almandine Garnet 0.885ct Loose Stone
Sale price¥8,800
Oregon Sunstone from the United States, 0.530ct loose stone
Sale price¥15,800
Brazilian Green Tourmaline 5.0mm/0.401ct Loose Stone (Rose Cut)
Sale price¥9,800
Russian Demantoid Garnet (Horsetail) 3.8mm/0.249ct Loose Stone
Sale price¥39,800
Madagascar Dumortierite (single crystal) 0.195ct loose stone
Sale price¥89,800
Sapphire from Madagascar 4.3mm/0.398ct loose
Sale price¥12,800
Hot Pink Spinel 0.203ct Loose (Mahenge Spinel)
Sale price¥8,800
Synthetic Moissanite 0.632ct loose stone (tie cut)
Sale price¥3,980
Synthetic Moissanite 0.509ct loose stone (tie cut)
Sale price¥3,980
Andalusite 0.293ct loose stone
Sale price¥3,980
Andalusite 0.192ct loose stone
Sale price¥2,980
Synthetic rutile 5.1mm/0.893ct loose stone
Sale price¥9,800
Brazilian rose amethyst 0.793ct loose stone
Sale price¥15,800
Diamond 0.061ct loose (trapeze cut, VS class equivalent)
Sale price¥7,980
Diamond 0.042ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Diamond 0.039ct loose (trapeze cut, equivalent to VS class)
Sale price¥5,980
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.