American Herkimer Diamond 5.6mm/0.516ct Loose
Sale price¥9,800
Brazilian Paraiba Tourmaline 0.200ct loose stone (CuO: 1.7%, MnO: 2.8%)
Sale price¥98,000
Brazilian Paraiba Tourmaline 0.821ct rough stone
Sale price¥39,800
Tanzanian bicolor tanzanite rough stone 2.750ct
Sale price¥9,800
Colombian Trapiche Emerald 0.372ct Loose
Sale price¥19,800
Colombian Trapiche Emerald 0.299ct Loose
Sale price¥16,800
Russian rough diamond (sawable) 0.098ct loose
Sale price¥24,800
Tanzanite from Tanzania 0.262ct loose stone
Sale price¥8,800
Brazilian Green Tourmaline 26.071ct Loose Stone (Sugarloaf Cut)
Sale price¥298,000
Brazilian bicolor tourmaline 6.928ct loose stone (bicolor blue tourmaline)
Sale price¥298,000
Colombian Trapiche Emerald 0.392ct Loose
Sale price¥19,800
Canary Yellow Tourmaline from Mozambique 0.223ct loose stone
Sale price¥8,800
Colombian Trapiche Emerald 0.222ct Loose
Sale price¥18,800
Russian rough diamond (sawable) 0.125ct loose
Sale price¥29,800
Colombian Trapiche Emerald 0.260ct Loose
Sale price¥14,800
Brazilian pink tourmaline 1.458ct loose stone
Sale price¥39,800
Tanzanite from Tanzania 0.491ct loose stone
Sale price¥8,800
Tanzanite from Tanzania 0.466ct loose stone
Sale price¥8,800
Brazilian Tourmaline (untreated) 5.120ct loose stone
Sale price¥39,800
Brazilian Green Tourmaline 0.182ct Loose Stone
Sale price¥8,800
Tourmaline 1.099ct loose
Sale price¥12,800
Diamond 2.7mm/0.074ct loose (E, SI2, special cut)
Sale price¥18,800
Brazilian Tinkerbell Quartz (Pink Fire Quartz) 3.865ct Loose Stone
Sale price¥19,800
Myanmar Ubaite Tourmaline 4.0mm/0.251ct Loose Stone
Sale price¥22,800
Watermelon tourmaline 6.575ct rough stone
Sale price¥9,800
Brazilian Green Tourmaline 12.252ct Loose Stone
Sale price¥398,000
Brazilian Paraiba Tourmaline 0.233ct loose stone (CuO: 1.6%. MnO: 2.4%)
Sale price¥358,000
Paraiba tourmaline from Brazil 0.154ct loose
Sale price¥29,800
Tanzanian Lavender Tanzanite 0.498ct Loose Stone
Sale price¥14,800
Tanzanian Lavender Tanzanite 0.382ct Loose Stone
Sale price¥12,800
Tanzanian Lavender Tanzanite 0.558ct Loose Stone
Sale price¥12,800
Tanzanian bicolor tanzanite 0.573ct loose stone
Sale price¥15,800
Tanzanian Lavender Tanzanite 0.577ct Loose Stone
Sale price¥15,800
Brazilian Pink Tourmaline 0.418ct Loose Stone (Rouge Cut)
Sale price¥9,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥22,800
Myanmar Pink Taaffeite 0.340ct Loose GIT
Sale price¥39,800
Brazilian Paraiba Tourmaline 0.360ct Loose GIA
Sale price¥298,000
Brazilian Green Tourmaline 0.825ct Loose Stone
Sale price¥9,800
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.