Birthstone list
White sapphire 0.212ct loose
Sale price¥6,980
White sapphire 0.338ct loose
Sale price¥9,800
[Posted 12533051] Cantera Opal 8.970ct Loose
Sale price¥12,800
Cantera Opal 5.750ct loose
Sale price¥18,800
Diamond 2.810ct rough stone
Sale price¥9,800
Mexican Cantera Opal 2.125ct Loose
Sale price¥39,800
Mexican Cantera Opal 5.882ct Loose
Sale price¥39,800
Sri Lankan Yellow Sapphire 0.300ct Loose
Sale price¥15,800
Salt and Pepper Diamond 5.2mm/0.863ct Loose (Cabochon Cut)
Sale price¥98,000
Russian oil-free emerald 0.570ct loose stone GIA
Sale price¥298,000
Afghanistan Oil-Free Emerald 0.100ct Loose GIA
Sale price¥98,000
0.060ct loose, oil-free emerald from Madagascar, GIA
Sale price¥69,800
American Peridot 0.458ct Loose Stone
Sale price¥6,980
Mexican fire opal (faceted cut) 0.167ct loose stone
Sale price¥8,800
Mexican fire opal (faceted cut) 0.198ct loose stone
Sale price¥8,800
Indian Moonstone 6.2mm/0.810ct Loose
Sale price¥8,800
Indian Moonstone 6.2mm/0.775ct Loose Stone
Sale price¥7,980
Ethiopian Opal 6.6mm/0.635ct Loose
Sale price¥9,800
Brazilian Aquamarine 0.627ct Loose Stone
Sale price¥6,980
Yellow tourmaline 2.290ct loose
Sale price¥8,800
Australian boulder opal 13.190ct loose
Sale price¥18,800
Green opal 15.950ct loose
Sale price¥29,800
Tanzanite 2.726ct loose
Sale price¥110,000
South African green diamond rough (makeable) 0.298ct loose
Sale price¥69,800
Cantera opal 14.581ct loose
Sale price¥22,800
Opal 21.584ct loose Japanese and German
Sale price¥8,800
Bicolor sapphire 0.853ct loose stone
Sale price¥9,800
Tanzanite 2.418ct loose
Sale price¥55,800
Montana Sapphire 1.9mm/0.033ct loose
Sale price¥4,980
Montana Sapphire 2.8mm/0.098ct Loose Stone (Yellow)
Sale price¥6,980
Pink sapphire from Greenland 0.754ct loose with certificate
Sale price¥25,800
Ruby from Greenland 0.268ct loose with certificate
Sale price¥18,800
Yellow sapphire from Sri Lanka 6mm/0.816ct loose
Sale price¥18,800
Yellow sapphire from Sri Lanka 6mm/0.962ct loose
Sale price¥18,800
Black opal 2.293ct loose
Sale price¥98,000
Mexican Hyalite Opal 1.587ct Loose
Sale price¥9,800
Mexican Cantera Opal 4.456ct Loose
Sale price¥39,800
0.324ct loose pink sapphire from Madagascar
Sale price¥12,800
Madagascar sapphire 0.298ct loose stone
Sale price¥12,800
Madagascar sapphire 0.503ct loose stone
Sale price¥15,800
Brazilian Aquamarine 0.287ct Loose Stone
Sale price¥6,980
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.