Spanish Sphalerite 2.374ct loose stone
Sale price¥79,800
Myanmar Pink Taaffeite 0.133ct Loose GIT
Sale price¥79,800
Bicolor tourmaline 4.448ct loose stone
Sale price¥55,800
Manganotantalite from Afghanistan 1.868ct loose stone
Sale price¥69,800
Myanmar Star Spinel 2.030ct Loose
Sale price¥79,800
Sri Lankan Star Sapphire 7.111ct Loose
Sale price¥59,800
Colombian pyrite emerald 3.817ct loose stone
Sale price¥79,800
American red beryl 0.160ct loose
Sale price¥98,000
Unheated Brazilian Paraiba Tourmaline 0.038ct loose stone
Sale price¥59,800
Padparadscha Sapphire 0.497ct Loose DGL
Sale price¥59,800
Sri Lankan Cobalt Spinel 0.676ct Loose Stone (Blue Spinel) Nikkei
Sale price¥79,800
Brazilian Paraiba Tourmaline 0.216ct loose stone (CuO:1.2%, MnO:2.7%)
Sale price¥69,800
Zimbabwean Euclase 0.088ct loose stone
Sale price¥69,800
Namibian Jeremejevite 0.261ct loose stone
Sale price¥69,800
Sri Lankan Purple Spinel 1.638ct Loose Stone, Japan-Germany Exchange
Sale price¥69,800
White Conch Pearl (with flame pattern) 0.627ct loose stone with jewel
Sale price¥69,800
Mexican Opal 9.6mm/1.803ct Loose (Contralus Opal)
Sale price¥69,800
Afghanite from Afghanistan 0.617ct loose stone
Sale price¥69,800
Colombian Trapiche emerald 0.611ct rough stone
Sale price¥69,800
Rainbow Quartz (Iridescent Quartz) 0.256ct Loose Stone, Japan-Germany
Sale price¥98,000
Chameleon Diamond Green Diamond 0.122ct Loose (FANCY GRAY GREEN, SI2)
Sale price¥69,800
Diamond 0.320ct loose (D, VS2)
Sale price¥79,800
Australian black opal 2.407ct loose
Sale price¥59,800
Synthetic Moissanite 8.931ct loose stone
Sale price¥55,800
Mozambique colorless tourmaline (acroite) 3.542ct loose stone
Sale price¥69,800
Brazilian Paraiba tourmaline in quartz 4.772ct loose
Sale price¥59,800
Dioptase from Namibia 0.150ct loose Japanese-German book
Sale price¥59,800
Blue Garnite from Nigeria 0.514ct Ruth Japanese-German Edition
Sale price¥59,800
[Sakura Incut] Smoky Quartz 22mm/27.511ct Loose Japanese-German Edition
Sale price¥98,000
[Camellia Cut] Ametrine 14mm/8.308ct Loose Stone
Sale price¥89,800
[Clover in cut] Emerald 9mm/2.498ct {Collaboration} Loose with patch
Sale price¥98,000
[Koshu precious stone cutter pluethree] Colombian emerald 2.018ct loose
Sale price¥98,000
Russian demantoid garnet (horsetail recognized) 3.3mm/0.187ct loose
Sale price¥69,800
Australian shell opal 53.277ct rough stone
Sale price¥59,800
[Moonsteiner] Pyrite in Quartz 18.288ct Loose
Sale price¥59,800
Australian shell opal (shell opal) 96.177ct rough stone
Sale price¥69,800
Russian emerald 0.712ct loose
Sale price¥59,800
Bicolor Sphalerite 9.8mm/4.517ct loose
Sale price¥69,800
Pink Diamond 0.073 Loose (FANCY DEEP PURPLISH PINK, SI1)
Sale price¥88,800
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.