Tanzanian bicolor sapphire 0.152ct loose stone
Sale price¥6,980
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Synthetic Opal 1.914ct Loose
Sale price¥15,800
Mexican Cantera Opal 3.297ct Loose
Sale price¥29,800
Ethiopian Opal 167.191ct Rough Stone
Sale price¥39,800
Diamond 2.7mm/0.074ct loose (E, SI2, special cut)
Sale price¥18,800
Malawi Sapphire 3mm/0.131ct Loose
Sale price¥15,800
Mexican Fire Opal 6.117ct Loose (Bicolor Fire Opal)
Sale price¥98,000
Madagascar Yellow Sapphire 0.283ct Loose
Sale price¥6,980
Madagascar sapphire 0.162ct loose stone
Sale price¥5,980
Madagascar sapphire 0.377ct loose stone
Sale price¥12,800
Emerald 0.308ct loose stone
Sale price¥14,800
Mexican Cantera Opal 5.204ct Loose
Sale price¥12,800
Colombian pyrite in emerald 6.415ct loose stone
Sale price¥298,000
Amazon Green Opal 1.372ct Loose (Faceted Cut)
Sale price¥8,800
Amazonian green opal 1.814ct loose stone (faceted cut)
Sale price¥9,800
Amazon Green Opal 0.781ct Loose (Faceted Cut)
Sale price¥7,980
Royal Blue Sapphire 1.182ct Loose (Calfshead) AIGS
Sale price¥98,000
Colombian oil-free emerald 0.290ct loose stone GIA
Sale price¥198,000
Brazilian copper rutilated quartz 1.410ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.352ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.647ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.560ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.937ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.381ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.262ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.991ct loose stone
Sale price¥6,980
Brazilian copper rutilated quartz 1.610ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 2.101ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.889ct loose stone
Sale price¥8,800
Brazilian copper rutilated quartz 1.465ct loose stone
Sale price¥8,800
Russian rough diamond (sawable) 0.088ct loose
Sale price¥22,800
Mexican Cantera Opal 7.720ct Loose
Sale price¥22,800
Mexican Cantera Opal 4.158ct Loose
Sale price¥15,800
Blue sapphire 0.231ct loose
Sale price¥9,800
Sri Lankan Yellow Sapphire 0.349ct Loose
Sale price¥12,800
Sri Lankan Yellow Sapphire 0.406ct Loose
Sale price¥9,800
Australian black opal 3.242ct loose stone
Sale price¥69,800
Australian black opal 3.322ct loose stone
Sale price¥98,000
Blue sapphire 0.287ct loose
Sale price¥12,800
Cornflower Blue Sapphire 1.080ct Loose AIGS
Sale price¥158,000
Russian Diamond Rough (Sawable) 0.103ct Loose (Trigon)
Sale price¥25,800
Ethiopian Opal 4.9mm/0.625ct Loose (Sphere)
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.