Brazilian alexandrite 0.082ct loose
Sale price¥15,800
Brazilian particolor Paraiba tourmaline 0.26ct loose GIA
Sale price¥598,000
Montebrasite from Madagascar 0.328ct loose
Sale price¥3,980
Brazilian Paraiba tourmaline 0.226ct loose (CuO:0.7%, MnO:2.5%)
Sale price¥39,800
Bicolor pink star sapphire from Mogok 0.360ct loose
Sale price¥24,800
Bicolor tourmaline 0.435ct loose (rose cut)
Sale price¥5,980
Pink tourmaline 0.482ct loose stone
Sale price¥5,980
Brazilian bicolor tourmaline 0.258ct loose stone
Sale price¥8,800
[12554117] Brazilian Alexandrite 0.058ct loose stone
Sale price¥14,800
South African rough diamond (sawable) 0.105ct rough (with trigon)
Sale price¥39,800
Afghanistan Hackmanite 0.091ct loose stone
Sale price¥18,800
South African Sugilite 5.2mm/0.434ct Loose Stone (Rose Cut)
Sale price¥18,800
German Auchenite 0.090ct loose stone
Sale price¥39,800
German Apatite 0.097ct loose stone
Sale price¥39,800
Tagtupite from Greenland 0.477ct loose
Sale price¥9,800
Paraiba tourmaline from Brazil 0.205ct loose (CuO:0.8%, MnO:3.1%)
Sale price¥39,800
Paraiba tourmaline from Brazil 0.167ct loose (CuO:1.6%, MnO:3.0%)
Sale price¥29,800
Paraiba tourmaline from Brazil 0.086ct loose (CuO:1.5%, MnO:2.3%)
Sale price¥18,800
Paraiba tourmaline from Brazil 0.226ct loose (CuO:0.7%, MnO:3.6%)
Sale price¥39,800
Paraiba tourmaline from Brazil 0.204ct loose
Sale price¥29,800
Paraiba tourmaline from Brazil 0.239ct loose
Sale price¥45,800
Paraiba tourmaline from Brazil 0.232ct loose
Sale price¥45,800
Paraiba tourmaline from Brazil 0.240ct loose (CuO:0.7%, MnO:3.8%)
Sale price¥45,800
Red beryl 0.173ct loose
Sale price¥29,800
Russian demantoid garnet (horsetail recognized) 4.2mm/0.336ct loose
Sale price¥79,800
Pink spinel 0.290ct loose
Sale price¥5,980
Purple spinel 0.210ct loose
Sale price¥3,980
Lavender spinel 0.160ct loose
Sale price¥3,980
Colombian emerald 0.222ct loose stone
Sale price¥59,800
Russian demantoid garnet (horsetail recognized) 4.4mm/0.394ct loose
Sale price¥69,800
Russian demantoid garnet (horsetail recognized) 4.6mm/0.423ct loose
Sale price¥79,800
Paudlettite 0.375ct loose Japanese-German book
Sale price¥298,000
Purple spinel 0.424ct loose (rose cut)
Sale price¥6,980
Pink tourmaline 0.391ct loose
Sale price¥4,980
Red beryl 0.181ct loose
Sale price¥29,800
Sri Lankan saffron 0.116ct loose stone with certificate of authenticity
Sale price¥25,800
Brazilian Goshenite 0.259ct loose stone
Sale price¥6,980
Tanzanian Rhodolite Garnet 0.405ct Loose Stone
Sale price¥6,980
Colombian emerald 0.101ct loose stone
Sale price¥15,800
Blue sapphire 4.0mm/0.314ct loose stone
Sale price¥112,800
Zimbabwean Bicolor Euclase 0.183ct Loose Stone
Sale price¥49,800
Zimbabwean Bicolor Euclase 0.197ct Loose Stone
Sale price¥39,800
Paraiba tourmaline from Mozambique 0.154ct loose stone
Sale price¥19,800
Tanzanian magnesioaxinite 0.380ct loose stone, Japan-Germany Quantity
Sale price¥39,800
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
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.