Nigerian Cobalt Gahnite 0.158ct Loose Stone with Certification
Sale price¥22,800
Nigerian Cobalt-bearing Gahnite 0.157ct Loose with Certificate
Sale price¥22,800
0.154ct Nigerian Cobalt Hausmannite Loose Stone with Certificate
Sale price¥24,800
0.066ct loose Brazilian Paraiba Tourmaline (CuO: 1.5%, MnO: 2.2%)
Sale price¥45,800
Paraiba Tourmaline from Brazil, 0.063 ct, loose (CuO: 1.8%, MnO: 2.4%)
Sale price¥55,800
Loose 0.061ct Brazilian Paraiba Tourmaline (CuO: 1.7%, MnO: 2.2%)
Sale price¥49,800
Tanzanian Kornerupine 0.172ct loose stone
Sale price¥12,800
Tanzanian Kornerupine 0.213ct loose stone
Sale price¥12,800
Madagascar Blue Sapphire 0.302ct Loose
Sale price¥15,800
Madagascar pink sapphire 0.346ct loose stone
Sale price¥15,800
0.093ct Hackmanite from Afghanistan
Sale price¥16,800
Paraiba tourmaline from Brazil 0.071ct loose
Sale price¥19,800
Tanzanian Pink Zoisite 0.190ct Loose Stone with Gemstone Report
Sale price¥79,800
Untreated Color-Change Brazilian Paraiba Tourmaline 0.050ct Loose Stone GIA
Sale price¥128,000
Colombian emerald 0.145ct loose stone with precious stone
Sale price¥29,800
Namibian Jeremejevite 0.261ct loose stone
Sale price¥45,800
Brazilian Bicolor Euclase 2.4mm/0.051ct Loose Stone
Sale price¥18,800
Tanzanian Kornerupine 0.210ct loose stone
Sale price¥11,000
Tanzanian Kornerupine 0.220ct loose stone
Sale price¥6,980
Tanzanian Kornerupine 0.229ct loose stone
Sale price¥9,800
German Awinite 0.070ct loose stone
Sale price¥29,800
German Awinite 0.056ct loose stone
Sale price¥22,800
Brazilian Lazulite 0.052ct Loose Stone with Certificate
Sale price¥32,800
Brazilian Paraiba Tourmaline 0.170ct Loose Stone (CuO: 2.1%, MnO: 1.1%)
Sale price¥258,000
0.056 ct loose Eudialyte from Canada with certificate
Sale price¥15,800
Brazilian Lazuilte (Lazulite) 0.066ct Loose Stone with Certificate
Sale price¥39,800
0.274 ct Loose Colombian Bi-Color Emerald
Sale price¥98,000
Pink Diamond 0.137ct Loose (FANCY DEEP BROWNISH PINK, I-1)
Sale price¥29,800
Colombian mint color emerald 0.136ct loose stone
Sale price¥6,980
Colombian mint color emerald 0.155ct loose stone
Sale price¥7,980
Colombian emerald 0.443ct rough stone
Sale price¥8,800
0.168ct Pakistan Vayrynenite Loose Gemstone
Sale price¥35,800
Unheated Brazilian Imperial Topaz (Sherry Color) 0.314ct Loose
Sale price¥22,800
Brazilian unheated imperial topaz (sherry color) 0.368ct loose gemstone
Sale price¥25,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.257ct Loose Stone
Sale price¥25,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.167ct Loose
Sale price¥16,800
Madagascar Bekily Blue Garnet (Color Change Garnet) 0.188ct Loose Stone
Sale price¥18,800
Zimbabwean Euclase 0.088ct loose stone
Sale price¥49,800
Benitoite 0.272ct loose stone (emerald cut)
Sale price¥248,000
Russian Alexandrite 2.5mm/0.078ct Loose Stone
Sale price¥49,800
Pakistani Lapis Lazuli (Lazurite) 0.150ct Loose Stone with Certificate
Sale price¥29,800
Jeremejevite 0.073ct Loose Stone from Namibia with Identification Report
Sale price¥15,800
Gray Diamond 2.8mm/0.089ct Loose (LIGHT GRAY, SI-2)
Sale price¥16,800
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.
KARATZ's Initiatives and Social Contributions
We will introduce KARATZ's efforts, including nurturing the next generation and business collaboration to develop the industry, and supporting children in Sri Lanka, the land of jewels.
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.