Tanzanian Cobalt Spinel (Blue Spinel) 0.118ct Loose Stone Japan-Germany
Sale price¥29,800
Brazilian Bicolor Tourmaline 16.088ct Loose (Tricolor) Nikkei
Sale price¥298,000
Brazilian Paraiba Tourmaline 0.167ct loose stone (CuO: 1.1%, MnO: 3.6%)
Sale price¥69,800
Cambodian colorless zircon 0.508ct loose stone
Sale price¥8,800
Cambodian colorless zircon 1.212ct loose stone
Sale price¥15,800
Cambodian colorless zircon 0.512ct loose stone
Sale price¥8,800
Argentine Inca Rose 5.022ct loose stone
Sale price¥12,800
Sri Lankan White Sapphire 0.385ct Loose
Sale price¥14,800
Mexican Cantera Opal 11.105ct Loose
Sale price¥12,800
Kyanite 1.042ct loose (commonly known as Paraiba color kyanite)
Sale price¥8,800
Mexican Cantera Opal 4.973ct Loose
Sale price¥15,800
Tanzanite from Tanzania 0.321ct loose stone
Sale price¥6,980
Tanzanite from Tanzania 0.250ct loose stone
Sale price¥7,980
Tanzanite from Tanzania 0.250ct loose stone
Sale price¥8,800
Tanzania Bicolor Zoisite 0.320ct Loose Stone
Sale price¥7,980
Brazilian bicolor tourmaline 0.675ct loose stone
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.261ct Loose
Sale price¥12,800
Sri Lankan Chrysoberyl Cat's Eye 0.519ct Loose Stone
Sale price¥8,800
Mexican Yellow Opal 0.673ct Loose
Sale price¥8,800
Mexican Yellow Opal 0.428ct Loose
Sale price¥8,800
Montana Sapphire (Blue Sapphire) 0.207ct Loose
Sale price¥6,980
Brazilian bicolor tourmaline 1.209ct loose stone
Sale price¥9,800
YAG (Yttrium Aluminum Garnet) 7.0mm/1.772ct loose stone
Sale price¥9,800
Ruby 0.284ct loose
Sale price¥15,800
Myanmar pink spinel 0.344ct loose stone
Sale price¥8,800
Madagascar White Topaz (Needle-in Topaz) 4.086ct Loose
Sale price¥15,800
Mexican Cantera Opal 2.809ct Loose
Sale price¥25,800
Mexican Cantera Opal 5.647ct Loose
Sale price¥19,800
Cambodian colorless zircon 0.309ct loose stone
Sale price¥4,980
Brazilian Rubellite (Red Tourmaline) 3.844ct Loose Stone
Sale price¥128,000
Diamond (cabochon cut) 0.183ct loose
Sale price¥24,800
Emerald 0.484ct loose
Sale price¥18,800
Myanmar Ruby 0.283ct Loose
Sale price¥29,800
Burmese Ruby 0.418ct Loose Stone Japan-Germany
Sale price¥35,800
Bekiri Blue Garnet (Color Change Garnet) from Madagascar 0.170ct Loose
Sale price¥18,800
Tanzania Bicolor Zoisite 4.7mm/0.415ct Loose Stone
Sale price¥12,800
Tanzania Bicolor Zoisite 4.6mm/0.401ct Loose Stone
Sale price¥12,800
Madagascar Pink Tourmaline 0.543ct Loose Stone
Sale price¥14,800
Madagascar Apatite 1.038ct Loose
Sale price¥12,800
Tanzanite from Tanzania 1.36ct loose stone
Sale price¥49,800
Brazilian bicolor tourmaline 0.914ct loose stone
Sale price¥12,800
Pt900/Pt850 Australian Black Opal 0.37ct Diamond 0.73ct Necklace
Sale price¥198,000
Non-Oil Emerald 1.070ct Loose Gübelin Certificate
Sale price¥698,000
Brazilian Alexandrite 0.519ct loose stone (sugarloaf cut)
Sale price¥358,000
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.