Oval Cut
Australian black opal 2.591ct loose stone
Sale price¥39,800
Australian black opal 1.399ct loose
Sale price¥22,800
Australian black opal 0.599ct loose stone
Sale price¥18,800
Australian black opal 0.693ct loose stone
Sale price¥8,800
Australian black opal 0.327ct loose stone
Sale price¥7,980
Brazilian Flower Rutile in Quartz 5.336ct Loose Stone
Sale price¥19,800
1.085ct Blue Apatite Loose Stone from Madagascar
Sale price¥8,800
Madagascar Blue Apatite 1.110ct Loose Stone
Sale price¥8,800
Brazilian Rubellite 0.897ct loose stone
Sale price¥29,800
Sri Lankan Silky Sapphire 1.166ct Loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.975ct loose
Sale price¥8,800
Mexican Opal (Faceted Cut) 0.640ct Loose
Sale price¥14,800
American Red Beryl 0.130ct Loose
Sale price¥29,800
Tanzania Color Change Chrome Tourmaline 13.194ct Loose Stone Chuhokan
Sale price¥398,000
Namibian Jeremejevite 0.194ct loose stone by Nikkei
Sale price¥15,800
Mexican Opal 1.639ct Loose (Contralus Opal)
Sale price¥29,800
Mexican Fire Opal (Faceted) 1.961ct Loose
Sale price¥29,800
Sri Lankan Chrysoberyl Cat's Eye 0.532ct Loose Stone
Sale price¥5,980
Unheated Ruby 0.330ct Loose AIGS
Sale price¥35,800
Burmese Ruby 0.418ct Loose Stone Japan-Germany
Sale price¥35,800
Burmese unheated ruby 0.245ct loose stone by Nikkei
Sale price¥39,800
Burmese Ruby 0.239ct Loose
Sale price¥9,800
Color shift amethyst 1.216ct loose stone
Sale price¥8,800
Madagascar sphene 1.386ct loose stone
Sale price¥12,800
Madagascar sphene 0.673ct loose stone
Sale price¥15,800
Pakistani Veirinite 0.096ct loose stone
Sale price¥12,800
Australian black opal 0.386ct loose stone
Sale price¥39,800
Montana Sapphire (Blue Sapphire) 0.207ct Loose
Sale price¥6,980
Brazilian Rubellite 2.022ct Loose Stone
Sale price¥55,800
Brazilian Rubellite (Red Tourmaline) 1.525ct Loose Stone
Sale price¥39,800
Sri Lankan Chrysoberyl Cat's Eye 0.519ct Loose Stone
Sale price¥8,800
Myanmar pink spinel 0.344ct loose stone
Sale price¥8,800
Brazilian Paraiba tourmaline 0.240ct loose (CuO:1.5%, MnO:1.8%)
Sale price¥45,800
Mexican Danburite 2.866ct loose stone (very light pink)
Sale price¥9,800
Cambodian colorless zircon 1.212ct loose stone
Sale price¥15,800
Tanzanite from Tanzania 1.522ct loose stone
Sale price¥55,800
Mozambique Aquamarine 3.301ct Loose Stone
Sale price¥59,800
Tibetan bicolor andesine 1.542ct loose stone
Sale price¥14,800
Brazilian Imperial Topaz 0.377ct Loose Stone
Sale price¥14,800
Brazilian Lazurite (Azurite) 0.071ct loose stone
Sale price¥22,800
Brazilian alexandrite 0.081ct loose
Sale price¥16,800
Brazilian Alexandrite 0.154ct loose stone
Sale price¥35,800
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.