Cabochon Cut
Mexican water opal 0.404ct loose stone
Sale price¥12,800
Mexican Opal 0.461ct Loose
Sale price¥8,800
Australian Opal 0.371ct Loose
Sale price¥8,800
Australian Opal 0.678ct Loose
Sale price¥5,980
Australian Opal 0.658ct Loose
Sale price¥8,800
Australian Opal 0.423ct Loose
Sale price¥6,980
Australian Opal 0.706ct Loose
Sale price¥8,800
Australian Opal 0.633ct Loose
Sale price¥9,800
Brazilian Dumortierite in Quartz 2.484ct loose stone
Sale price¥9,800
Mexican Cantera Opal 3.176ct Loose
Sale price¥39,800
Mexican Cantera Opal 2.038ct Loose
Sale price¥29,800
Synthetic black opal 1.209ct loose stone
Sale price¥18,800
Brazilian Medusa Quartz (Paraiba Quartz) 1.672ct Loose Stone
Sale price¥15,800
Brazilian Medusa Quartz (Paraiba Quartz) 2.250ct Loose
Sale price¥19,800
Sri Lankan pink star sapphire 0.391ct loose stone
Sale price¥12,800
Sri Lankan pink star sapphire 0.270ct loose stone
Sale price¥12,800
Star sapphire 7.256ct loose stone
Sale price¥18,800
Star Ruby 0.461ct Loose Stone with Certificate
Sale price¥18,800
Sri Lankan Star Ruby 0.564ct Loose Stone with Certificate
Sale price¥24,800
Spanish Sphalerite 5.3mm/1.009ct loose stone
Sale price¥6,980
Spanish Sphalerite 5.1mm/0.928ct loose stone
Sale price¥5,980
Spanish Sphalerite 5.9mm/1.132ct loose stone
Sale price¥6,980
Spanish Sphalerite 5.9mm/1.498ct loose stone
Sale price¥8,800
Spanish Sphalerite 6.3mm/1.771ct loose stone
Sale price¥8,800
Brown diamond 0.554ct loose (cabochon cut, SI class equivalent)
Sale price¥69,800
Sri Lankan Star Sapphire 5.0mm/0.899ct Loose
Sale price¥9,800
Sri Lankan Star Sapphire 5.0mm/0.892ct Loose Stone
Sale price¥9,800
Yellow Diamond 0.551ct Loose (Cabochon Cut)
Sale price¥49,800
Sri Lankan Star Sapphire 0.753ct Loose
Sale price¥8,800
Sri Lankan Star Sapphire 0.681ct Loose
Sale price¥8,800
Sri Lankan Star Sapphire 5.0mm/0.897ct Loose Stone
Sale price¥8,800
Sri Lankan Star Sapphire 0.796ct Loose
Sale price¥9,800
Diamond (cabochon cut) 0.247ct loose (VS-SI class equivalent)
Sale price¥39,800
Mexican Cantera Opal 5.126ct Loose
Sale price¥25,800
Mexican Cantera Opal 7.081ct Loose
Sale price¥15,800
Mexican Cantera Opal 4.602ct Loose
Sale price¥29,800
Mexican Cantera Opal 6.385ct Loose
Sale price¥18,800
Mexican Cantera Opal 1.842ct Loose
Sale price¥39,800
Mexican Cantera Opal 9.909ct Loose
Sale price¥39,800
Mexican Cantera Opal 5.238ct Loose
Sale price¥15,800
Mexican Cantera Opal 7.275ct Loose
Sale price¥35,800
Mexican Cantera Opal 5.261ct Loose
Sale price¥49,800
Australian black opal 0.856ct loose stone
Sale price¥12,800
Australian black opal 1.018ct loose stone
Sale price¥18,800
Australian black opal 0.812ct loose stone
Sale price¥8,800
Sri Lankan Star Sapphire 1.237ct Loose
Sale price¥15,800
Brazilian Paraiba Tourmaline in Quartz 1.171ct Loose Stone
Sale price¥18,800
Brazilian Paraiba Tourmaline in Quartz 1.674ct loose stone
Sale price¥19,800
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.