Untreated green tourmaline from Brazil, 0.596 ct, loose
Sale price¥9,800
Russian Demantoid Garnet (Horsetail) 2.9mm/0.194ct Loose Stone
Sale price¥22,800
Tanzanite 1.004ct loose stone
Sale price¥18,800
Green tourmaline 0.621ct loose stone
Sale price¥9,800
Green tourmaline 0.457ct loose stone
Sale price¥8,800
Brazilian Imperial Topaz 0.826ct Loose
Sale price¥18,800
Bicolor tourmaline 1.198ct loose
Sale price¥12,800
Iridescent Tourmaline 3.107ct Loose Stone
Sale price¥37,800
Gray Diamond 0.158ct Loose (FANCY DARK GRAY, I-1)
Sale price¥45,800
Brazilian Imperial Topaz 0.357ct Loose Stone
Sale price¥12,800
Brazilian Imperial Topaz 0.349ct Loose Stone
Sale price¥12,800
Brazilian Imperial Topaz 0.153ct Loose
Sale price¥5,980
Sky blue topaz 0.563ct loose stone
Sale price¥5,980
Brazilian imperial topaz 0.830ct loose
Sale price¥18,800
Tanzanite 0.349ct loose
Sale price¥8,800
Tanzanite 0.328ct loose stone
Sale price¥8,800
Green tourmaline 0.090ct loose stone
Sale price¥5,980
Bicolor tourmaline 0.423ct loose
Sale price¥12,800
Bicolor tourmaline 0.552ct loose
Sale price¥12,800
Bicolor tourmaline 0.548ct loose
Sale price¥6,980
Green tourmaline 0.637ct loose
Sale price¥8,800
Brazilian Limonite in Topaz 6.579ct loose stone (with rainbow)
Sale price¥18,800
Brazilian dendritic quartz 3.608ct loose stone
Sale price¥8,800
Brown Diamond 0.531ct Loose (FANCY DARK BROWN, SI-2)
Sale price¥39,800
Zambian Canary Yellow Tourmaline 0.158ct Loose Stone
Sale price¥9,800
Blue Tourmaline 1.460ct Loose Stone Japan-Germany Exchange
Sale price¥39,800
Bicolor Tourmaline 0.649ct Loose Stone, Japan-Germany
Sale price¥12,800
Unheated Bicolor Paraiba Tourmaline 0.092ct Loose GIA
Sale price¥188,000
Bicolor Paraiba tourmaline 2.477ct loose DGL version
Sale price¥298,000
Mexican bicolor Danburite 1.932ct loose stone by Nikkei
Sale price¥29,800
[Rouge Cut] Pink Tourmaline from Brazil 0.440ct Loose
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.699ct Loose Stone
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.910ct Loose Stone
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.642ct Loose Stone
Sale price¥8,800
Brazilian dumortierite in quartz, 0.813 ct, loose
Sale price¥9,800
Brazilian dumortierite in quartz, 0.796 ct, loose
Sale price¥7,980
Brazilian Dumortierite in Quartz 0.543ct Loose Stone
Sale price¥5,980
Brazilian dumortierite in quartz 1.060ct loose (faceted cut)
Sale price¥9,800
Brazilian Dendritic Quartz 6.059ct Loose Stone (Rainbow)
Sale price¥15,800
Brazilian Dendritic Quartz 8.598ct Loose Stone
Sale price¥19,800
Brazilian Dendritic Quartz 4.182ct Loose Stone
Sale price¥12,800
Tanzanite from Tanzania 0.416ct loose stone
Sale price¥12,800
Brazilian Blue Tourmaline 0.819ct Loose Stone
Sale price¥31,800
Zimbabwe Green Diamond Rough (Sawable) 0.428ct Rough Stone with Trigon
Sale price¥158,000
Brazilian Paraiba tourmaline in quartz 1.602ct loose
Sale price¥39,800
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.