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
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
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
Ethiopian Opal 5.2mm/0.688ct Loose (Sphere)
Sale price¥6,980
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
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
American Bicolor Benitoite 0.358ct Loose Stone by Nikkei
Sale price¥298,000
Madagascar sapphire 0.377ct loose stone
Sale price¥12,800
Tanzania Green Apatite 0.329ct Loose Stone
Sale price¥8,800
Emerald 0.308ct loose stone
Sale price¥14,800
Brazilian Euclase 0.695ct Loose Stone
Sale price¥18,800
Tanzanian Lavender Tanzanite 0.382ct Loose Stone
Sale price¥12,800
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
Synthetic Moissanite 5.8mm/0.678ct Loose Stone
Sale price¥9,800
Synthetic Moissanite 5.8mm/0.682ct Loose Stone
Sale price¥9,800
Brazilian Green Tourmaline 0.332ct Loose Stone
Sale price¥9,800
Tanzanite from Tanzania 0.385ct loose stone
Sale price¥9,800
Tanzania Bicolor Zoisite 0.286ct Loose Stone
Sale price¥8,800
Synthetic Moissanite 0.634ct loose stone
Sale price¥9,800
Tanzanian Rhodolite Garnet 0.448ct Loose Stone
Sale price¥6,980
American Herkimer Diamond (Rock Crystal) 5.5mm/0.528ct Loose
Sale price¥8,800
Goshenite 5.7mm/0.572ct loose stone
Sale price¥5,980
Tanzanite 0.760ct loose stone (sugarloaf cut)
Sale price¥9,800
Zimbabwean Blue Apatite (UV Type) 0.650ct Loose
Sale price¥9,800
Almandine Garnet 0.660ct Loose
Sale price¥6,980
Nigerian bicolor tourmaline 0.379ct loose stone
Sale price¥8,800
Madagascar sapphire 0.448ct loose stone
Sale price¥19,800
Vietnam Aquamarine 0.494ct Loose Stone
Sale price¥8,800
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.