0.604ct rough diamond
Sale price¥12,800
Brazilian green tourmaline 4.345ct loose stone
Sale price¥69,800
Tanzanite from Tanzania 2.777ct loose stone
Sale price¥98,000
Brazilian Blue Tourmaline 0.827ct Loose Stone
Sale price¥19,800
Brazilian Dumortierite in Quartz 0.382ct Loose Stone
Sale price¥9,800
Mint color tourmaline 0.198ct loose
Sale price¥4,980
Mint color tourmaline 0.229ct loose
Sale price¥4,980
Pink tourmaline 0.205ct loose
Sale price¥4,980
Diaspore 1.209ct loose from Türkiye
Sale price¥15,800
Diaspore from Türkiye 0.636ct loose
Sale price¥9,800
Tourmaline cat's eye 0.910ct loose
Sale price¥4,980
![[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone](http://store.karatz.jp/cdn/shop/files/PC052301_931dfc6c-1047-4bdf-821f-203298615d94.jpg?v=1765588004&width=2810)
[12/7 22:00] Brazilian Dumortierite in Quartz 16.250ct Loose Stone
Sale price¥9,800
Tanzanian Chrome Tourmaline 0.164ct Loose Stone
Sale price¥9,800
Brazilian Pink Tourmaline 5.0mm/0.484ct Loose Stone (Rose Cut)
Sale price¥8,800
Brazilian Dumortierite in Quartz 1.131ct Loose Stone
Sale price¥12,800
Brazilian green tourmaline 0.821ct loose stone
Sale price¥12,800
Brazilian green tourmaline 3.102ct loose stone
Sale price¥69,800
Kenyan Tsavorite 0.806ct Loose Stone
Sale price¥39,800
Zambian bicolor tourmaline 4.019ct loose stone
Sale price¥98,000
Purple Diamond 0.070ct Loose (FANCY VIVID PINK PURPLE, I-1)
Sale price¥188,000
Brazilian Paraiba tourmaline in quartz 2.954ct loose
Sale price¥39,800
White topaz 16.06ct loose
Sale price¥25,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥79,800
Myanmar star diopside 0.898ct loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Loose Tourmaline from Brazil, 0.270 ct
Sale price¥5,980
Brazilian Dumortierite in Quartz 10.0mm/5.357ct Loose Stone
Sale price¥39,800
Brazil Indicolite Tourmaline 0.431ct Loose Gemstone with Certificate
Sale price¥29,800
Pink tourmaline 0.516ct loose
Sale price¥5,980
Bicolor tanzanite 0.479ct loose
Sale price¥18,800
Paraiba tourmaline from Brazil 0.144ct loose (CuO:0.9%,MnO:2.8%)
Sale price¥55,800
Brazilian bicolor tourmaline 4.497ct loose stone
Sale price¥69,800
Brazilian Green Tourmaline 5.0mm/0.401ct Loose Stone (Rose Cut)
Sale price¥9,800
Russian Demantoid Garnet (Horsetail) 3.8mm/0.249ct Loose Stone
Sale price¥39,800
Madagascar Dumortierite (single crystal) 0.195ct loose stone
Sale price¥89,800
Brazilian bicolor tourmaline 2.047ct loose
Sale price¥29,800
Diamond 0.061ct loose (trapeze cut, VS class equivalent)
Sale price¥7,980
Diamond 0.042ct loose (trapeze cut, VS class equivalent)
Sale price¥6,980
Diamond 0.039ct loose (trapeze cut, equivalent to VS class)
Sale price¥5,980
Bicolor tourmaline 22.088ct loose
Sale price¥298,000
Blue tourmaline from Afghanistan 4.5mm/0.326ct loose
Sale price¥7,980
0.200ct loose diamond (G, VVS2, radiant cut)
Sale price¥29,800
Diamond 3.2mm/0.132ct Loose (G, VS-2, EXCELLENT)
Sale price¥29,800
Brazilian Swiss Blue Topaz 13.287ct Loose Stone
Sale price¥18,800
Brazilian bicolor tourmaline 1.764ct loose
Sale price¥32,800
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.