Brazilian Medusa Quartz (Paraiba Quartz) 3.441ct loose
Sale price¥3,980
Brazilian Medusa Quartz (Paraiba Quartz) 2.757ct loose
Sale price¥3,980
Tanzanian orange zircon 3.804ct loose
Sale price¥35,800
Sphene from Madagascar 1.853ct loose
Sale price¥24,800
Bicolor chrysoberyl from Madagascar 1.753ct loose
Sale price¥25,800
Bicolor chrysoberyl from Madagascar 1.003ct loose
Sale price¥14,800
Bicolor chrysoberyl from Madagascar 1.520ct loose
Sale price¥18,800
Bicolor Zoisite 0.581ct loose
Sale price¥12,800
Spanish bicolor sphalerite 6.230ct loose
Sale price¥69,800
Dendritic Agate 31.019ct Ruth Japanese/German
Sale price¥6,980
Mexican cantera opal 15.542ct loose
Sale price¥15,800
Mexican cantera opal 9.422ct loose
Sale price¥25,800
Mexican cantera opal 7.563ct loose
Sale price¥15,800
Australian boulder opal 6.980ct loose
Sale price¥6,980
Red beryl 0.104ct loose
Sale price¥29,800
Brazilian Euclase 1.240ct loose
Sale price¥19,800
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Labradorite Moonstone 1.598ct Loose Stone Japanese-German
Sale price¥8,800
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥39,800
Bicolor sphene from Madagascar 1.242ct loose
Sale price¥49,800
Sphene from Madagascar 1.229ct loose
Sale price¥55,800
Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose
Sale price¥6,980
Oregon Sunstone 1.157ct loose
Sale price¥8,800
Yellow opal 17.283ct loose
Sale price¥29,800
White topaz 16.06ct loose
Sale price¥25,800
Petalite 2.858ct loose
Sale price¥7,980
Bicolor grossular garnet 0.782ct loose
Sale price¥12,800
South African rhodochrosite 1.333ct loose Japanese-German edition
Sale price¥98,000
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition
Sale price¥55,800
Purple spinel 0.995ct loose stone
Sale price¥15,800
Myanmar star diopside 0.898ct loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Strontium titanate 5mm/0.688ct loose stone
Sale price¥12,800
Chrysoberyl cat's eye 2.553ct loose (bicolor)
Sale price¥39,800
Chrysoberyl cat's eye 0.904ct loose
Sale price¥12,800
[12/6 22:00] Tanzanian Green Zoisite 0.435ct Loose Stone
Sale price¥12,800
Cornell pin from Tanzania 0.523ct loose
Sale price¥7,980
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥8,800
Blue zircon 0.397ct loose stone
Sale price¥6,980
Oregon Sunstone 0.976ct loose
Sale price¥18,800
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥9,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥69,800
Bicolor Andesine 6mm/0.756ct loose
Sale price¥12,800
Paraiba Tourmaline from Mozambique 2.037ct loose stone with gem analysis
Sale price¥498,000
Australian boulder opal 3.695ct loose
Sale price¥14,800
Australian boulder opal 2.470ct loose
Sale price¥7,980
Dioptase from Namibia 3.3mm/0.162ct loose Japanese-German edition
Sale price¥79,800
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.