Tourmaline 0.541ct loose stone
Sale price¥8,800
Brazilian bicolor tourmaline 0.326ct loose stone
Sale price¥8,800
Brazilian Green Tourmaline 0.350ct Loose
Sale price¥9,800
Brazilian bicolor euclase 0.239ct loose stone
Sale price¥18,800
Brazilian bicolor euclase 0.572ct loose stone
Sale price¥24,800
[Koshu Precious Stone Cutting Pluethree] Yellow Beryl 0.880ct Loose
Sale price¥29,800
Oregon Sunstone from the United States 6mm/0.849ct loose stone
Sale price¥22,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.365ct Loose Stone
Sale price¥18,800
Tanzania Pink Zoisite 5.8mm/0.848ct Loose Stone
Sale price¥198,000
Madagascar Grandidierite 0.521ct loose stone
Sale price¥128,000
Brazilian Paraiba Tourmaline 0.230ct Loose GIA (CuO: 0.9%, MnO: 1.1%)
Sale price¥158,000
Mexican Fire Opal 0.212ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Fire Opal 0.356ct Loose (Faceted Cut)
Sale price¥9,800
Green tourmaline 0.512ct loose stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.502ct loose stone
Sale price¥12,800
Madagascar Yellow Sapphire 0.863ct Loose
Sale price¥18,800
Nigerian Aventurine Aquamarine 0.471ct Loose Stone
Sale price¥8,800
Vietnam Aquamarine 6.0mm/0.781ct Loose Stone
Sale price¥8,800
Pink sapphire 0.271ct loose stone
Sale price¥8,800
Montana Sapphire 0.405ct Loose (Green Sapphire)
Sale price¥9,800
Brazilian Paraiba Tourmaline 0.759ct rough stone
Sale price¥45,800
Cassiterite 1.658ct loose stone (bicolor cassiterite) Japan-Germany exchange
Sale price¥128,000
Colombian Trapiche Emerald 0.291ct Loose
Sale price¥15,800
Colombian Trapiche Emerald 0.147ct Loose
Sale price¥9,800
Ethiopian Opal 5.2mm/0.688ct Loose (Sphere)
Sale price¥6,980
Colombian Trapiche Emerald 0.266ct Loose
Sale price¥14,800
American Herkimer Diamond 5.6mm/0.516ct Loose
Sale price¥9,800
Brazilian Paraiba Tourmaline 0.821ct rough stone
Sale price¥39,800
Colombian Trapiche Emerald 0.299ct Loose
Sale price¥16,800
Tanzania Bicolor Zoisite 0.397ct Loose Stone
Sale price¥8,800
Colombian Trapiche Emerald 0.392ct Loose
Sale price¥19,800
Colombian Trapiche Emerald 0.260ct Loose
Sale price¥14,800
Amazonian green opal 0.517ct loose stone (faceted cut)
Sale price¥8,800
Amazon Green Opal 0.285ct Loose (Faceted Cut)
Sale price¥6,980
Oregon Sunstone from the United States 0.292ct loose stone
Sale price¥8,800
Synthetic Alexandrite 0.841ct loose stone
Sale price¥15,800
Tanzania Bicolor Zoisite 0.357ct Loose Stone
Sale price¥6,980
Spanish Andalusite 5.7mm/0.706ct loose stone
Sale price¥9,800
Chinese bicolor fluorite 1.192ct loose stone
Sale price¥7,980
Chinese bicolor fluorite 1.088ct loose stone
Sale price¥7,980
Chinese bicolor fluorite 0.990ct loose stone
Sale price¥6,980
Chinese bicolor fluorite 0.908ct loose stone
Sale price¥6,980
Vietnam Aquamarine 5.1mm/0.410ct Loose Stone
Sale price¥6,980
Vietnam Aquamarine 5.9mm/0.700ct Loose Stone
Sale price¥8,800
Vietnam Aquamarine 5.1mm/0.457ct Loose Stone
Sale price¥6,980
American Bicolor Benitoite 0.358ct Loose Stone by Nikkei
Sale price¥298,000
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.