Madagascar Blue Sapphire 0.347ct Loose Stone with Appraisal Report
Sale price¥25,800
Tanzanite from Tanzania 0.416ct loose stone
Sale price¥12,800
Synthetic Alexandrite 4.3mm/0.430ct Loose Stone
Sale price¥12,800
Brazilian alexandrite 0.070ct loose
Sale price¥39,800
USA-origin Oregon Sunstone, 7.0mm/1.356ct loose
Sale price¥35,800
Oregon Sunstone from the United States, 6.1mm/0.820ct loose stone
Sale price¥16,800
American Oregon Sunstone 7.0mm/1.494ct Loose
Sale price¥35,800
Brazilian Dendritic Quartz 4.182ct Loose Stone
Sale price¥12,800
Brazilian Dendritic Quartz 8.598ct Loose Stone
Sale price¥19,800
Brazilian Dendritic Quartz 6.059ct Loose Stone (Rainbow)
Sale price¥15,800
Brazilian dumortierite in quartz 1.060ct loose (faceted cut)
Sale price¥9,800
0.603ct Brazilian Dumortierite in Quartz Faceted Loose Stone
Sale price¥7,980
Brazilian Dumortierite in Quartz 0.543ct Loose Stone
Sale price¥5,980
Brazilian dumortierite in quartz, 0.796 ct, loose
Sale price¥7,980
Brazilian dumortierite in quartz, 0.813 ct, loose
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.642ct Loose Stone
Sale price¥8,800
Brazilian Dumortierite in Quartz 0.910ct Loose Stone
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.699ct Loose Stone
Sale price¥6,980
Brazilian Amethyst 2.975ct Loose Stone
Sale price¥9,800
Loose Brazilian rose amethyst, 2.626 ct
Sale price¥9,800
Mozambican Almandine Garnet 1.363ct Loose Stone
Sale price¥12,800
Brazilian Lazulite 0.035ct Loose Stone with Certificate
Sale price¥24,800
Brazilian Lazulite 0.067ct Loose with certificate
Sale price¥39,800
Nigerian Cobalt Garnet 0.095ct Loose with Certificate
Sale price¥18,800
[Rouge Cut] Mexican Fire Opal 1.458ct Loose Stone
Sale price¥18,800
[Rouge Cut] Pink Tourmaline from Brazil 0.440ct Loose
Sale price¥9,800
Oregon Sunstone 8.256ct rough stone
Sale price¥9,800
Australian rainbow lattice sunstone 0.354ct loose
Sale price¥4,980
Australian rainbow lattice sunstone 0.449ct loose
Sale price¥4,980
Australian rainbow lattice sunstone 0.498ct loose
Sale price¥2,980
Australian rainbow lattice sunstone 0.378ct loose
Sale price¥4,980
Mexican bicolor Danburite 1.932ct loose stone by Nikkei
Sale price¥29,800
Bicolor Paraiba tourmaline 2.477ct loose DGL version
Sale price¥298,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
Bicolor Tourmaline 0.649ct Loose Stone, Japan-Germany
Sale price¥12,800
Dioptase from Namibia 0.150ct loose Japanese-German book
Sale price¥49,800
Brazilian Medusa Quartz (Paraiba Quartz) 2.484ct loose stone
Sale price¥29,800
[Option] Milling
Sale price¥50,000
Zambian Canary Yellow Tourmaline 0.158ct Loose Stone
Sale price¥9,800
Australian black opal 1.168ct loose stone
Sale price¥39,800
Australian black opal 0.758ct loose stone
Sale price¥35,800
Australian Black Opal 0.956ct Loose Stone
Sale price¥39,800
Australian Black Opal 0.768ct Loose
Sale price¥25,800
Australian Black Opal 0.754ct Loose
Sale price¥22,800
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.