South African rough diamond (sawable) 0.105ct rough (with trigon)
Sale price¥39,800
Blue sapphire 4.1mm/0.332ct loose stone
Sale price¥25,800
Blue sapphire 0.291ct loose stone
Sale price¥18,800
Australian boulder opal 9.120ct loose
Sale price¥98,000
Sierra Leone sapphire 1.470ct loose
Sale price¥9,800
Australian opal 14.837ct loose
Sale price¥98,000
Mexican Fire Opal 1.580ct Loose
Sale price¥25,800
Colombian Emerald 0.222ct Loose
Sale price¥59,800
Green sapphire 7.545ct loose (spade cut)
Sale price¥59,800
Colombian emerald 0.101ct loose stone
Sale price¥15,800
Pt950 Myanmar gray spinel (platinum spinel) 5.5mm/0.685ct black diamond ring
Sale price¥128,000
Fire Opal 2 Stone Pair 4mm/0.336ct Loose
Sale price¥3,980
Diamond 0.618ct loose (I, I1, tree cut)
Sale price¥128,000
Colombian mint-colored emerald 0.214ct loose stone
Sale price¥8,800
Zambian emerald 0.159ct loose stone
Sale price¥8,800
Zambian emerald 0.135ct loose stone
Sale price¥8,800
Mozambique pink sapphire 0.169ct loose stone
Sale price¥6,980
0.145ct loose pink sapphire from Madagascar
Sale price¥6,980
Blue sapphire 0.295ct loose stone
Sale price¥7,980
0.333ct loose sapphire
Sale price¥8,800
0.266ct loose blue sapphire from Madagascar
Sale price¥8,800
0.170ct loose blue sapphire from Madagascar
Sale price¥8,800
Brazilian mint-colored emerald 0.945ct loose stone
Sale price¥25,800
Bicolor sapphire 0.856ct loose
Sale price¥18,800
Cornflower blue sapphire 0.490ct loose stone
Sale price¥98,000
Pigeon Blood Ruby 0.280ct Loose
Sale price¥49,800
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
White sapphire 0.464ct loose
Sale price¥9,800
White sapphire 0.418ct loose
Sale price¥12,800
White sapphire 0.364ct loose
Sale price¥9,800
White sapphire 0.212ct loose
Sale price¥6,980
White sapphire 0.338ct loose
Sale price¥9,800
[Posted 12533051] Cantera Opal 8.970ct Loose
Sale price¥12,800
Cantera Opal 5.750ct loose
Sale price¥18,800
Diamond 2.810ct rough stone
Sale price¥9,800
Mexican Cantera Opal 2.125ct Loose
Sale price¥39,800
Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥15,800
Salt and Pepper Diamond 5.2mm/0.863ct Loose (Cabochon Cut)
Sale price¥98,000
Russian oil-free emerald 0.570ct loose stone GIA
Sale price¥298,000
Afghanistan Oil-Free Emerald 0.100ct Loose GIA
Sale price¥98,000
0.060ct loose, oil-free emerald from Madagascar, GIA
Sale price¥69,800
Mexican fire opal (faceted cut) 0.167ct loose stone
Sale price¥8,800
Mexican fire opal (faceted cut) 0.198ct loose stone
Sale price¥8,800
Ethiopian Opal 6.6mm/0.635ct Loose
Sale price¥9,800
Australian boulder opal 13.190ct loose
Sale price¥18,800
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.