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) 5.2mm/0.633ct loose
Sale price¥198,000
Russian demantoid garnet (horsetail recognized) 4.6mm/0.425ct loose
Sale price¥69,800
Russian demantoid garnet (horsetail recognized) 3.2mm/0.175ct loose
Sale price¥15,800
YAG (yttrium aluminum garnet) 1.870ct loose
Sale price¥9,800
Bicolor tourmaline 1.050ct loose
Sale price¥8,800
Bicolor tourmaline 0.780ct loose
Sale price¥9,800
Color change Andesine 1.67ct loose
Sale price¥25,800
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
Goethite in quartz 1.020ct loose
Sale price¥2,980
Peach benitoite 0.135ct loose Japanese-German book (orange/blue)
Sale price¥158,000
Paraiba tourmaline from Brazil 0.224ct loose (CuO:0.8%, MnO:1.7%)
Sale price¥29,800
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
1.483ct blue sapphire loose stone
Sale price¥98,000
[12560246] Green Zoisite 1.316ct Loose Stone
Sale price¥15,800
Colombian mint-colored emerald, 4.3mm/0.306ct loose stone
Sale price¥8,800
Brazilian mint-colored emerald, 5.5mm/0.638ct loose stone
Sale price¥8,800
[12560252] Zambian emerald 0.138ct loose stone
Sale price¥8,800
Cornflower Blue Sapphire 0.530ct Loose AIGS
Sale price¥128,000
Myanmar Leuco Garnet 4.0mm/0.371ct Loose Stone
Sale price¥39,800
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
California Axinite 1.150ct Loose Stone (Phantom Cut)
Sale price¥8,800
Fluorite 1.420ct loose stone
Sale price¥3,980
Afghanite 0.210ct loose
Sale price¥6,980
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.