Zambian emerald 0.210ct loose stone
Sale price¥8,800
Blue sapphire 1.432ct loose stone
Sale price¥39,800
Thai Blue Sapphire 0.388ct Loose
Sale price¥9,800
Thai Blue Sapphire 0.740ct Loose
Sale price¥15,800
Alexandrite 0.201ct loose stone
Sale price¥39,800
Diamond (cabochon cut) 0.247ct loose (VS-SI class equivalent)
Sale price¥39,800
Tanzania Peristerite 0.805ct loose stone
Sale price¥6,980
Brazilian Dendritic Agate 2.163ct Loose Stone
Sale price¥8,800
Brazilian Dendritic Agate 1.155ct Loose Stone
Sale price¥6,980
Grandidierite from Madagascar 2.7mm/0.102ct loose stone
Sale price¥25,800
Namibian Jeremejevite 2.3mm/0.063ct loose stone
Sale price¥12,800
Tanzanian Blue Spinel 0.165ct Loose Stone
Sale price¥8,800
Tanzania Blue Spinel 0.244ct Loose Stone
Sale price¥9,800
Mexican Cantera Opal 4.602ct Loose
Sale price¥29,800
Mexican Cantera Opal 1.842ct Loose
Sale price¥39,800
Mexican Cantera Opal 6.385ct Loose
Sale price¥18,800
Brazilian Alexandrite 2.7mm/0.090ct Loose Stone JTL Catalog
Sale price¥22,800
Brazilian Alexandrite 0.135ct loose stone
Sale price¥35,800
Brazilian Alexandrite 0.072ct Loose Stone JTL Catalog
Sale price¥12,800
Tanzania Purple Spinel 0.346ct Loose Stone
Sale price¥8,800
Tanzania Purple Spinel 0.356ct Loose Stone
Sale price¥8,800
Mexican Cantera Opal 5.126ct Loose
Sale price¥25,800
Jeremejevite from Namibia 0.025ct loose
Sale price¥6,980
Namibian Jeremejevite 0.046ct loose stone
Sale price¥8,800
Namibian Jeremejevite 0.024ct loose stone
Sale price¥7,980
Pakistani Ludwigite in Peridot 0.285ct loose stone
Sale price¥5,980
Madagascar sphene 0.790ct loose stone
Sale price¥9,800
Madagascar sphene 0.430ct loose stone
Sale price¥8,800
Madagascar sphene 1.060ct loose stone
Sale price¥12,800
Synthetic Alexandrite 0.472ct loose stone
Sale price¥8,800
Brazilian Mica in Quartz (Mica in Quartz) 0.701ct Loose Stone
Sale price¥6,980
Brazilian Mica in Quartz (Mica in Quartz) 1.009ct Loose Stone
Sale price¥9,800
Brazilian Mica in Quartz (Mica in Quartz) 0.622ct Loose Stone
Sale price¥6,980
Madagascar Green Apatite 0.531ct Loose Stone
Sale price¥6,980
Madagascar sapphire 0.375ct loose stone
Sale price¥8,800
Indian Moss Agate 0.721ct Loose Stone
Sale price¥8,800
Indian Moss Agate 0.873ct Loose Stone
Sale price¥7,980
Mexican Cantera Opal 5.238ct Loose
Sale price¥15,800
Mexican Cantera Opal 9.909ct Loose
Sale price¥39,800
Tanzania Purple Spinel 0.307ct Loose Stone
Sale price¥9,800
Tanzania Purple Spinel 0.333ct Loose Stone
Sale price¥9,800
Tanzania Purple Spinel 0.236ct Loose Stone
Sale price¥9,800
Zambian emerald 0.181ct loose stone
Sale price¥8,800
Tanzanian grey spinel 0.291ct loose stone
Sale price¥9,800
Ruby 4.0mm/0.305ct loose stone
Sale price¥45,800
Tanzanite from Tanzania 7.0mm/1.427ct loose stone
Sale price¥55,800
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.