Brazilian Bicolor Paraiba Tourmaline 0.851ct Loose Stone
Sale price¥18,800
Madagascar Purple Sapphire 0.433ct Loose Stone
Sale price¥14,800
Spanish Sphalerite 6.494ct loose stone
Sale price¥69,800
Spanish bicolor sphalerite 5.289ct loose stone
Sale price¥59,800
Spanish Sphalerite 1.609ct loose stone
Sale price¥19,800
German Awinite 2.7mm/0.064ct loose stone
Sale price¥22,800
Mexican Opal (Faceted Cut) 1.052ct Loose
Sale price¥19,800
Mexican Opal (Faceted Cut) 0.640ct Loose
Sale price¥14,800
Mexican Opal (Faceted Cut) 0.550ct Loose
Sale price¥25,800
Mexican Fire Opal (Faceted) 6.1mm/0.450ct Loose
Sale price¥12,800
Mexican Fire Opal (Faceted Cut) 0.352ct Loose
Sale price¥9,800
Mexican Fire Opal 0.921ct Loose
Sale price¥14,800
Mexican Fire Opal 1.670ct Loose
Sale price¥29,800
Synthetic Moissanite 10mm/4.147ct Loose Stone
Sale price¥16,800
Colombian Trapiche Emerald 0.712ct Loose
Sale price¥39,800
Brazilian Blue Tourmaline 0.650ct Loose
Sale price¥9,800
Blue sapphire 0.217ct loose stone
Sale price¥15,800
Brazilian bicolor tourmaline 1.953ct loose stone
Sale price¥18,800
American Red Beryl 0.130ct Loose
Sale price¥29,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Afghanite from Afghanistan 0.250ct loose stone
Sale price¥6,980
Afghanite 0.333ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
Afghanite 0.447ct loose stone from Afghanistan, Japan-Germany
Sale price¥8,800
African Tourmaline 0.711ct Loose Stone
Sale price¥5,980
Namibian Jeremejevite 0.194ct loose stone by Nikkei
Sale price¥15,800
Diamond 3.0mm/0.123ct loose stone (D, VS2, octagonal cut)
Sale price¥28,800
Mexican Opal 1.639ct Loose (Contralus Opal)
Sale price¥29,800
Tibetan bicolor andesine 1.431ct loose stone
Sale price¥12,800
Sri Lankan pink star sapphire 1.021ct loose stone
Sale price¥11,000
Italian Leucite 0.287ct loose stone (play of color)
Sale price¥9,800
Italian Leucite 0.321ct loose stone (play of color)
Sale price¥11,800
Brazilian bicolor tourmaline 1.660ct loose stone
Sale price¥29,800
Tanzanian bicolor tanzanite 1.644ct rough and loose stone set of 2
Sale price¥8,800
[Dandelion cut] Pyrope almandine garnet 9.0mm/3.566ct loose stone
Sale price¥35,800
[Dandelion Cut] Brazilian Pink Tourmaline 7mm Loose Patch
Sale price¥55,800
Pt900 Colombian emerald 0.60ct diamond 0.19ct ring
Sale price¥98,000
Caribbean Conch Pearl 0.332ct Loose (Pink White)
Sale price¥29,800
Mexican Opal 8.8mm/1.640ct Loose
Sale price¥29,800
Sri Lankan bicolor sapphire 0.260ct loose stone
Sale price¥12,800
Bicolor sapphire 2.040ct loose stone
Sale price¥59,800
Brazilian bicolor tourmaline 1.020ct loose stone
Sale price¥19,800
Hackmanite from Afghanistan, 27.410ct rough stone
Sale price¥9,800
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.