Diamond 0.534ct rough stone
Sale price¥9,800
Australian black opal 0.310ct loose
Sale price¥8,800
Color change sapphire 0.453ct loose
Sale price¥5,980
Twin star sapphire from Sri Lanka 2.523ct loose
Sale price¥98,000
Twin star sapphire from Sri Lanka 3.858ct loose (black star sapphire)
Sale price¥59,800
Twin star sapphire from Sri Lanka 3.003ct loose (Violet star sapphire)
Sale price¥59,800
American Herkimer Diamond (Rock Crystal) 5.3mm/0.594ct Loose
Sale price¥8,800
American Herkimer Diamond (Rock Crystal) 5.5mm/0.534ct Loose
Sale price¥8,800
Montana Sapphire 0.254ct loose
Sale price¥9,800
Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut)
Sale price¥6,980
Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut)
Sale price¥3,980
Mexican egg-in-opal 0.627ct loose stone
Sale price¥8,800
Mexican egg-in-opal 1.243ct loose stone
Sale price¥14,800
[Dandelion Cut] K18PG Yellow Sapphire 1.927 Ring Japanese-German Edition
Sale price¥298,000
Russian rough diamond (sawable) 0.101ct loose
Sale price¥25,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥12,800
Blue sapphire 0.231ct loose
Sale price¥9,800
Mexican Cantera Opal 4.158ct Loose
Sale price¥15,800
Mexican Cantera Opal 7.720ct Loose
Sale price¥22,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥22,800
Brazilian copper rutilated quartz 1.465ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 2.101ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.610ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.991ct loose stone
Sale price¥6,980
Brazilian copper rutilated quartz 1.262ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.381ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.937ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.560ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.647ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.352ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.410ct loose stone
Sale price¥8,800
Colombian oil-free emerald 0.290ct loose stone GIA
Sale price¥198,000
Colombian pyrite in emerald 6.415ct loose stone
Sale price¥298,000
Mexican Cantera Opal 5.204ct Loose
Sale price¥12,800
Emerald 0.308ct loose stone
Sale price¥14,800
Madagascar sapphire 0.377ct loose stone
Sale price¥12,800
Madagascar Yellow Sapphire 0.283ct Loose
Sale price¥6,980
Ethiopian Opal 167.191ct Rough Stone
Sale price¥39,800
Mexican Cantera Opal 3.297ct Loose
Sale price¥29,800
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Brazilian copper rutilated quartz 1.334ct loose stone
Sale price¥9,800
Amazon Green Opal 0.285ct Loose (Faceted Cut)
Sale price¥6,980
Amazonian green opal 0.517ct loose stone (faceted cut)
Sale price¥8,800
Amazon Green Opal 0.814ct Loose (Faceted Cut)
Sale price¥8,800
Sri Lankan glass body (sapphire crystal) 10.140ct rough stone
Sale price¥29,800
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.