Brazilian Sky Blue Topaz 1.086ct Loose
Sale price¥8,800
Tanzanite from Tanzania 0.432ct loose stone
Sale price¥12,800
Brazilian bicolor topaz 2.618ct loose stone (untreated)
Sale price¥18,800
Afghanistan diaspore 0.215ct loose stone
Sale price¥12,800
Brazilian Green Tourmaline 0.561ct Loose Stone
Sale price¥25,800
Brazilian Green Tourmaline 1.431ct Loose Stone
Sale price¥12,800
Brazilian Green Tourmaline 4.613ct Loose Stone
Sale price¥39,800
Russian demantoid garnet (horsetail recognized) 0.291ct loose
Sale price¥69,800
Tanzanian bicolor tanzanite 1.284ct loose stone
Sale price¥29,800
Tanzanite from Tanzania 5.8mm/0.803ct loose stone
Sale price¥35,800
Russian Demantoid Garnet (Horsetail certified) 4.6mm/0.464ct loose stone
Sale price¥128,000
Brazilian Dumortierite in Quartz 3.188ct loose stone (faceted cut)
Sale price¥12,800
Brazilian Dumortierite in Quartz 1.284ct loose stone (faceted cut)
Sale price¥9,800
Tanzanite 1.055ct loose stone
Sale price¥29,800
Tanzanite 1.458ct loose stone
Sale price¥39,800
Mozambique pink tourmaline 1.006ct loose stone
Sale price¥8,800
Brazilian Sky Blue Topaz (untreated) 2.560ct loose stone
Sale price¥12,800
Brazilian unheated pink imperial topaz (sherry pink) 0.931ct loose stone
Sale price¥98,000
South African diamond rough stone 0.330ct
Sale price¥5,980
Round Diamond 0.389ct Loose (Cabochon Cut)
Sale price¥39,800
Brazilian Paraiba Tourmaline in Quartz 7.9mm/1.133ct Loose Stone
Sale price¥22,800
Brazilian Paraiba Tourmaline in Quartz 1.530ct Loose Stone
Sale price¥29,800
Brazilian Paraiba Tourmaline in Quartz 3.046ct loose stone
Sale price¥45,800
Brazilian Paraiba Tourmaline in Quartz 4.3mm/0.292ct Loose Stone
Sale price¥12,800
Brazilian Paraiba Tourmaline in Quartz 4.5mm/0.328ct Loose Stone
Sale price¥12,800
Tanzania UV type bicolor tsavorite 0.947ct loose stone
Sale price¥39,800
South African diamond rough stone 0.210ct
Sale price¥8,800
South African Diamond Rough (Sawable) 0.107ct Rough Trigon
Sale price¥42,800
Brazilian Dumortierite in Quartz 0.578ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.482ct loose stone (faceted cut)
Sale price¥5,980
Brazilian Dumortierite in Quartz 0.652ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Dumortierite in Quartz 0.313ct loose stone (faceted cut)
Sale price¥6,980
Brazilian Dumortierite in Quartz 0.154ct loose stone (faceted cut)
Sale price¥9,800
Brazilian Paraiba tourmaline 0.184ct raw stone (CuO:1.5%, MnO:0.6%)
Sale price¥12,800
Brazilian Paraiba tourmaline 0.180ct raw stone (CuO:1.8%, MnO:0.1%)
Sale price¥12,800
Brazilian bicolor tourmaline 12.842ct loose
Sale price¥298,000
Brazilian Dumortierite in Quartz 0.368ct loose stone
Sale price¥12,800
Turkish pink diaspore 0.194ct loose stone
Sale price¥9,800
Turkish pink diaspore 0.171ct loose stone
Sale price¥8,800
Turkish pink diaspore 0.151ct loose stone
Sale price¥8,800
Tanzanian mint diopside 0.229ct loose stone
Sale price¥12,800
Brazilian Pink Tourmaline 0.361ct Loose Stone
Sale price¥9,800
[Sakura Shape] Brazilian Green Tourmaline 6.7mm/1.057ct Loose Patch
Sale price¥39,800
White Topaz 2.563ct Loose (Needle-in Topaz)
Sale price¥5,980
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.