Vietnam Aquamarine 5.9mm/0.700ct Loose Stone
Sale price¥8,800
Vietnam Aquamarine 5.0mm/0.739ct Loose Stone
Sale price¥9,800
Vietnam Aquamarine 5.1mm/0.457ct Loose Stone
Sale price¥6,980
Brazilian Green Tourmaline 0.182ct Loose Stone
Sale price¥8,800
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Synthetic Opal 1.914ct Loose
Sale price¥15,800
Mexican Opal 1.199ct Loose (Contralus Opal)
Sale price¥39,800
Italian Leucite 0.374ct loose stone (play of color)
Sale price¥14,800
Mexican Cantera Opal 3.297ct Loose
Sale price¥29,800
Congo Carolite 6.2mm/1.481ct Loose Stone Japan-Germany Scale
Sale price¥29,800
Almandine garnet 2.421ct loose
Sale price¥18,800
Tourmaline 1.099ct loose
Sale price¥12,800
Tasmanian Crocoite 0.292ct Loose Stone, Japan-Germany Exchange
Sale price¥98,000
Italian Leucite 0.338ct loose stone (play of color)
Sale price¥15,800
Synthetic Moissanite 11.7mm/5.570ct Loose Stone (Portuguese Cut)
Sale price¥29,800
[Koshu Precious Stone Cut] Scololite 6.039ct Loose Stone Patch
Sale price¥69,800
Diamond 2.7mm/0.074ct loose (E, SI2, special cut)
Sale price¥18,800
Brazilian Euclase 0.213ct loose stone (bicolor Euclase)
Sale price¥15,800
American Benitoite 4.8mm/0.396ct Loose Stone by Nikkei
Sale price¥298,000
American Bicolor Benitoite 0.358ct Loose Stone by Nikkei
Sale price¥298,000
Namibian Jeremejevite 0.307ct loose stone by Nikkei
Sale price¥22,800
Pakistani Clinohumite 1.440ct Loose Stone, Japan-Germany Exchange
Sale price¥29,800
Purple zoisite from Tanzania 1.103ct loose Japanese German edition
Sale price¥98,000
Mexican Fire Agate 6.090ct Loose Stone
Sale price¥14,800
[Koshu Precious Stones Plusthree] Ametrine 5.170ct Loose Patch
Sale price¥45,800
Italian Leucite 0.346ct loose stone (play of color)
Sale price¥12,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.865ct Loose Stone
Sale price¥19,800
Myanmar Podretteite 0.238ct loose stone Nissaiho
Sale price¥35,800
[Camellia Cut] Ametrine 12mm/5.411ct {Collaboration} Loose Stone Patch
Sale price¥55,800
Mexican Fire Opal 6.117ct Loose (Bicolor Fire Opal)
Sale price¥98,000
Tanzanian Kornerupine Cat's Eye 0.622ct Loose Stone
Sale price¥4,980
Sri Lankan Enstatite 2.567ct Loose Stone, Japan-Germany Exchange
Sale price¥19,800
Madagascar Yellow Sapphire 0.283ct Loose
Sale price¥6,980
Madagascar sapphire 0.162ct loose stone
Sale price¥5,980
Madagascar sapphire 0.377ct loose stone
Sale price¥12,800
Tanzania Green Apatite 0.246ct Loose Stone
Sale price¥8,800
Tanzania Green Apatite 0.190ct Loose Stone
Sale price¥6,980
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.