Cushion cut
Demantoid Garnet from Madagascar 0.169ct loose stone
Sale price¥25,800
Romanesite in Quartz 4.825ct loose stone
Sale price¥12,800
Oregon Sunstone 0.359ct loose
Sale price¥8,800
Brazilian Romanesite in Amethyst 7.083ct Loose Stone
Sale price¥18,800
Benitoite 0.352ct loose
Sale price¥298,000
Brazilian Paraiba Tourmaline 0.405ct loose stone (CuO2.7% CuO2.2%) GIA
Sale price¥198,000
Triplite 0.439ct loose stone
Sale price¥12,800
Triplite 0.383ct loose stone
Sale price¥12,800
Brazilian Morganite 7.339ct loose stone
Sale price¥39,800
Afghanistan Hackmanite 0.418ct loose stone
Sale price¥12,800
Zimbabwean Blue Apatite (UV type) 1.061ct loose stone
Sale price¥12,800
Brazilian Medusa Quartz (Paraiba Quartz) 1.132ct Loose Stone
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 1.241ct Loose Stone
Sale price¥6,980
Brazilian Medusa Quartz (Paraiba Quartz) 1.405ct Loose Stone
Sale price¥8,800
Colombian Euclase 24.491ct Ruth Medium Treasure Guide
Sale price¥498,000
Blue Garnite from Nigeria 0.514ct Ruth Japanese-German Edition
Sale price¥59,800
Taaffeite from Myanmar 0.70ct loose GIT guide
Sale price¥59,800
Lazurite in quartz from Madagascar 0.990ct loose
Sale price¥14,800
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.
業界発展のための後進育成や事業協力、宝石の国スリランカの子どもたちへの支援活動など、KARATZの取り組みについてご紹介いたします。
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.