South African diamond rough (sawable) 0.091ct rough (trigon)
Sale price¥35,800
Yellow Diamond (Cabochon Cut) 0.185ct Loose
Sale price¥25,800
Afghanistan Awinite 0.103ct loose stone JTL catalog
Sale price¥49,800
Afghanistan Awinite 0.075ct loose stone JTL catalog
Sale price¥35,800
Afghanistan Awinite 0.069ct loose stone JTL catalog
Sale price¥29,800
Russian Demantoid Garnet (Horsetail certified) 2.4mm/0.066ct loose stone
Sale price¥12,800
Brazilian Alexandrite 0.073ct loose stone (princess cut)
Sale price¥16,800
Brazilian Alexandrite 0.089ct loose stone (princess cut)
Sale price¥19,800
Madagascar sapphire 0.153ct loose stone
Sale price¥6,980
Madagascar sapphire 0.157ct loose stone
Sale price¥6,980
German Awinite 0.117ct loose stone
Sale price¥25,800
German Awinite 0.076ct loose stone
Sale price¥18,800
Brazilian Euclase 0.116ct loose stone (bicolor Euclase)
Sale price¥25,800
Brazilian Euclase 0.222ct Loose Stone
Sale price¥18,800
Bicolor sapphire 0.143ct loose
Sale price¥8,800
American Red Beryl 0.130ct Loose
Sale price¥29,800
Namibian Jeremejevite 0.194ct loose stone by Nikkei
Sale price¥15,800
Unheated Mozambique Ruby 0.220ct Loose
Sale price¥25,800
Montana Sapphire (Blue Sapphire) 0.207ct Loose
Sale price¥6,980
Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
Diamond (cabochon cut) 0.183ct loose
Sale price¥24,800
American red beryl 0.092ct loose
Sale price¥19,800
Brazilian Lazurite (Azurite) 0.083ct loose stone
Sale price¥24,800
Brazilian Lazurite (Azurite) 0.071ct loose stone
Sale price¥22,800
Brazilian Lazurite (Azurite) 0.052ct loose stone
Sale price¥16,800
Brazilian Alexandrite 0.154ct loose stone
Sale price¥35,800
Brazilian bicolor euclase 0.157ct loose stone
Sale price¥14,800
Umba Sapphire (Tanzania) 0.182ct loose stone
Sale price¥7,980
Brazilian Paraiba Tourmaline 0.211ct loose stone
Sale price¥49,800
Pakistani Veirinite 0.072ct loose stone
Sale price¥19,800
Pakistani Veirinite 0.107ct loose stone
Sale price¥29,800
Russian diamond rough (sawable) 0.094ct rough
Sale price¥24,800
Colombian mint color emerald 0.178ct loose stone
Sale price¥6,980
Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%)
Sale price¥98,000
Russian rough diamond (sawable) 0.098ct loose
Sale price¥24,800
American Red Beryl 0.106ct Loose
Sale price¥24,800
American benitoite 0.074ct loose
Sale price¥8,800
Brazilian Euclase 0.224ct Loose Stone (Bicolor Euclase)
Sale price¥18,800
Zimbabwe Bicolor Euclase 0.152ct Loose Stone by Nikkei
Sale price¥158,000
Namibian Jeremejevite 0.307ct loose stone by Nikkei
Sale price¥22,800
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.