Birthstone list
Brazilian bicolor tourmaline 13.927ct loose stone
Sale price¥198,000
Yellow Diamond (Cabochon Cut) 0.237ct Loose
Sale price¥35,800
Yellow Diamond (Cabochon Cut) 0.176ct Loose
Sale price¥29,800
Colombian trapiche emerald (reverse trapiche) 0.178ct rough stone
Sale price¥15,800
Brazilian bicolor tourmaline 0.572ct loose stone (rose cut)
Sale price¥14,800
Brazilian Bicolor Tourmaline 0.901ct Loose Stone (Rose Cut)
Sale price¥12,800
[Dandelion Cut] YAG (Yttrium Aluminum Garnet) 9mm/4.121ct Loose Patch
Sale price¥39,800
Brazilian bicolor tourmaline 1.032ct loose stone
Sale price¥25,800
Brazilian bicolor tourmaline 1.875ct loose stone
Sale price¥39,800
Brazilian bicolor tourmaline 1.255ct loose stone
Sale price¥25,800
Brazilian pink tourmaline 0.781ct loose stone
Sale price¥9,800
Brazilian pink tourmaline 0.918ct loose stone
Sale price¥9,800
Brazilian Pink Tourmaline 1.045ct Loose Stone
Sale price¥9,800
Mexican Fire Opal 1.348ct Loose
Sale price¥15,800
Bicolor sapphire 0.301ct loose
Sale price¥18,800
[On sale 7/3 at 22:00] Madagascar bicolor sapphire 0.232ct loose stone
Sale price¥15,800
[On sale 7/3 at 22:00] Madagascar bicolor sapphire 0.188ct loose stone
Sale price¥12,800
Madagascar Bekiri Blue Garnet (Color Change Garnet) 0.375ct Loose Stone
Sale price¥18,800
Brazilian Swiss Blue Topaz 1.179ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.827ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.889ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.890ct Loose
Sale price¥8,800
Brazilian Swiss Blue Topaz 1.042ct Loose Stone
Sale price¥9,800
Brazilian Swiss Blue Topaz 0.983ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 1.395ct Loose
Sale price¥8,800
Brazilian Swiss Blue Topaz 0.724ct Loose Stone
Sale price¥8,800
Brazilian Swiss Blue Topaz 1.043ct Loose Stone
Sale price¥8,800
Brazilian Blue Topaz 1.355ct Loose
Sale price¥8,800
Brazilian Blue Topaz 0.766ct Loose Stone
Sale price¥6,980
Brazilian Sky Blue Topaz 1.086ct Loose
Sale price¥8,800
Dominican Republic Conch Pearl (with flame pattern) 1.260ct loose
Sale price¥25,800
Dominican Republic Conch Pearl 0.800ct Loose
Sale price¥19,800
Colombian emerald cat's eye 0.084ct loose
Sale price¥6,980
Paraiba tourmaline from Brazil 0.200ct loose (CuO: 0.7%, MnO: 4.0%)
Sale price¥29,800
Diamond 0.245ct loose stone (E, VS-1, octagon brilliant cut)
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.