Brazilian Green Tourmaline 42.854ct Loose Stone
Sale price¥198,000
Congo Dioptase 29.012ct rough stone
Sale price¥5,980
Congo Dioptase 24.371ct rough stone
Sale price¥9,800
Congo Dioptase 24.892ct rough stone
Sale price¥9,800
Congo Dioptase 46.537ct rough stone
Sale price¥18,800
Congo Dioptase 52.488ct rough stone
Sale price¥19,800
Congo Dioptase 79.498ct rough stone
Sale price¥31,800
Congo Dioptase 34.022ct rough stone
Sale price¥15,800
Congo Dioptase 85.471ct rough stone
Sale price¥34,800
Brazilian bicolor tourmaline 0.644ct loose stone
Sale price¥9,800
Spodumene 1.844ct loose stone
Sale price¥12,800
Sri Lankan Green Zircon 0.456ct Loose Stone
Sale price¥6,980
Colombian Trapiche Emerald 0.712ct Loose
Sale price¥39,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
[Takeshi Yamamoto] Bicolor fluorite 15.624ct loose stone
Sale price¥45,800
Australian Prehnite 5.398ct loose stone
Sale price¥12,800
Colombian emerald 3.5mm/0.150ct loose stone
Sale price¥22,800
Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut)
Sale price¥358,000
Non-Oil Emerald 1.070ct Loose Gübelin Certificate
Sale price¥698,000
Emerald 0.484ct loose
Sale price¥18,800
Emerald 0.156ct loose stone
Sale price¥8,800
Madagascar Apatite 1.038ct Loose
Sale price¥12,800
Madagascar sphene 1.386ct loose stone
Sale price¥12,800
Madagascar sphene 0.673ct loose stone
Sale price¥15,800
Tanzania Green Zoisite 0.335ct Loose Stone
Sale price¥12,800
Australian Green Opal 4.990ct Loose
Sale price¥9,800
Brazilian bicolor tourmaline 0.582ct loose stone
Sale price¥6,980
Brazilian Green Tourmaline 0.703ct Loose Stone
Sale price¥15,800
Brazilian Green Tourmaline 0.764ct Loose Stone
Sale price¥9,800
Brazilian bicolor tourmaline 0.675ct loose stone
Sale price¥9,800
Indian Alexandrite Cat's Eye 0.787ct Loose Stone
Sale price¥25,800
Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%)
Sale price¥69,800
Brazilian Bicolor Tourmaline 16.088ct Loose (Tricolor) Nikkei
Sale price¥298,000
Brazilian Paraiba tourmaline 0.240ct loose (CuO:1.5%, MnO:1.8%)
Sale price¥45,800
Russian oil-free emerald 0.640ct loose GIA
Sale price¥198,000
Pakistani emerald 0.436ct loose stone
Sale price¥49,800
Madagascar Oregon Sunstone 4mm/0.239ct Loose Stone
Sale price¥7,980
Oregon Sunstone from the United States 4.0mm/0.206ct loose stone
Sale price¥8,800
Brazilian bicolor tourmaline cat's eye 22.056ct loose stone
Sale price¥198,000
Congo Bicolor Tourmaline 3.429ct Loose
Sale price¥128,000
Madagascar emerald 0.816ct loose stone
Sale price¥98,000
Oregon Sunstone from the United States 5.0mm/0.460ct loose stone
Sale price¥19,800
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.