Brazilian Dumortierite in Quartz 0.978ct Loose Stone
Sale price¥12,800
Mozambique pink sapphire 0.169ct loose stone
Sale price¥6,980
0.145ct loose pink sapphire from Madagascar
Sale price¥6,980
Pink sapphire 0.179ct loose stone
Sale price¥6,980
0.417ct loose blue sapphire from Madagascar
Sale price¥9,800
0.374ct loose blue sapphire from Madagascar
Sale price¥9,800
0.333ct loose sapphire
Sale price¥8,800
0.170ct loose blue sapphire from Madagascar
Sale price¥8,800
0.162ct loose blue sapphire from Madagascar
Sale price¥9,800
Namibian Jeremejevite 0.245ct loose stone
Sale price¥79,800
Russian Demantoid Garnet (Horsetail) 0.100ct Loose
Sale price¥14,800
Russian Demantoid Garnet (Horsetail) 0.115ct Loose Stone
Sale price¥18,800
Russian emerald 0.249ct loose stone
Sale price¥158,000
Russian emerald 0.269ct loose stone
Sale price¥79,800
Brazilian mint-colored emerald 0.945ct loose stone
Sale price¥25,800
African bicolor tourmaline 0.950ct loose stone (phantom cut)
Sale price¥9,800
Russian demantoid garnet (horsetail recognized) 4.6mm/0.425ct loose
Sale price¥69,800
Bicolor tourmaline 0.780ct loose
Sale price¥9,800
Purple sapphire 0.313ct loose
Sale price¥6,980
Purple sapphire 0.220ct loose
Sale price¥3,980
Purple sapphire 0.240ct loose
Sale price¥4,980
Afghanite 0.496ct loose Japanese-German book
Sale price¥9,800
Peach benitoite 0.135ct loose Japanese-German book (orange/blue)
Sale price¥158,000
Paraiba tourmaline from Brazil 0.203ct loose (CuO: 0.9%, MnO: 2.6%)
Sale price¥29,800
Rough diamond (makeable) 0.353ct loose
Sale price¥25,800
Rough diamond (makeable) 0.279ct loose
Sale price¥25,800
Bicolor Benitoite 0.624ct Loose Japanese-German Edition
Sale price¥188,000
Brazilian Paraiba tourmaline 0.455ct raw stone (CuO: 0.9%, MnO: 2.2%)
Sale price¥15,800
Brazilian Paraiba tourmaline 0.448ct raw stone (CuO:2.7%, MnO:2.0%)
Sale price¥19,800
Brazilian Paraiba tourmaline 0.156ct raw stone (CuO:2.5%, MnO:0.5%)
Sale price¥15,800
Brazilian alexandrite 0.102ct loose
Sale price¥15,800
Brazilian alexandrite 0.091ct loose
Sale price¥15,800
[12560244] Bicolor Zoisite 0.508ct Loose Stone
Sale price¥7,980
Colombian mint-colored emerald, 4.3mm/0.306ct loose stone
Sale price¥8,800
[12560252] Zambian emerald 0.138ct loose stone
Sale price¥8,800
Bicolor sapphire 0.334ct loose
Sale price¥9,800
Bicolor sapphire 0.149ct loose
Sale price¥6,980
Bicolor sapphire 0.323ct loose
Sale price¥9,800
Afghanite 0.210ct loose
Sale price¥6,980
Diamond 0.054ct loose (VS class equivalent, emerald cut)
Sale price¥8,800
Colombian emerald cat's eye 0.112ct loose
Sale price¥9,800
Colombian emerald cat's eye 0.094ct loose
Sale price¥8,800
Paraiba tourmaline from Brazil 0.054ct loose (CuO:1.2%, MnO:3.1%)
Sale price¥15,800
Paraiba tourmaline from Brazil 0.353ct loose (CuO:0.8%, Mn:3.4%)
Sale price¥39,800
Red beryl 0.187ct loose
Sale price¥29,800
White sapphire 0.464ct loose
Sale price¥9,800
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.