Birthstone list
Sri Lankan Ilmenite in Star Sapphire 3.426ct loose stone (Ratnapura)
Sale price¥49,800
Sapphire 0.461ct loose stone
Sale price¥12,800
Vietnam unheated silky pink sapphire 0.580ct loose stone
Sale price¥12,800
Diamond 0.042ct loose (VS class equivalent, emerald cut)
Sale price¥6,980
Colombian emerald 0.345ct loose stone (silky type)
Sale price¥15,800
Ethiopian Opal 2.131ct Loose
Sale price¥9,800
Brazilian Imperial Topaz 0.402ct Loose Stone
Sale price¥9,800
Yellow tourmaline 0.277ct loose
Sale price¥6,980
Green tourmaline 0.559ct loose
Sale price¥6,980
Pink tourmaline 0.632ct loose
Sale price¥9,800
Pink tourmaline 1.575ct loose
Sale price¥12,800
Mexican Hyalite Opal 0.774ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Fire Opal (faceted) 0.645ct Loose Stone
Sale price¥18,800
GGG (Gadolinium Gallium Garnet) 3.046ct Loose Stone
Sale price¥18,800
Tanzanian Rhodolite Garnet 5.9mm/1.084ct Loose
Sale price¥12,800
0.308ct Unset Yellow Sapphire (Sri Lankan)
Sale price¥13,800
Mexican Cantera Opal 32.560ct Loose
Sale price¥29,800
27.410ct Mexican Cantera Opal Loose Gemstone
Sale price¥25,800
Brazilian Bicolor Tourmaline 0.780ct Loose
Sale price¥12,800
Gray Diamond 2.8mm/0.089ct Loose (LIGHT GRAY, SI-2)
Sale price¥16,800
Mexican Cantera Opal 10.379ct Loose Stone
Sale price¥39,800
Mexican Cantera Opal 7.619 ct Loose Stone
Sale price¥25,800
Mexican Cantera Opal 7.207ct Loose
Sale price¥25,800
Mexican Cantera Opal 3.051ct Loose Stone
Sale price¥18,800
Mexican Cantera Opal 1.867 ct Loose Stone
Sale price¥12,800
6.558ct Loose Australian Black Opal with Certificate of Authenticity
Sale price¥39,800
Loose Tanzanian spessartine garnet, 0.417ct
Sale price¥12,800
Tanzanian Spessartine Garnet 0.359ct Loose Stone
Sale price¥9,800
Brown Diamond 6.5mm/0.989ct Loose Stone (FANCY DARK ORANGE BROWN, SI-2)
Sale price¥98,000
K18 Peridot and Diamond 0.03ct Ring
Sale price¥45,800
K18 Peridot and Diamond 0.03ct Ring
Sale price¥45,800
Ceylon Blue Sapphire (Ice Blue) 0.289ct Loose
Sale price¥9,800
[Colorful] K18WG Blood Coral and Diamond (0.19ct) Brooch with certificate
Sale price¥398,000
[Calafri] K18WG Tsavorite 0.57ct Ring with Certificate
Sale price¥89,800
0.354ct Unheated Star Sapphire Loose Stone from Sri Lanka
Sale price¥6,980
Loose 0.485 ct Sri Lankan Blue Sapphire
Sale price¥9,800
0.329ct Loose Blue Sapphire from Sri Lanka
Sale price¥15,800
0.455ct Loose Madagascar Blue Sapphire
Sale price¥25,800
Brazilian Aventurine Aquamarine 4.2mm/0.239ct Loose Stone
Sale price¥8,800
Tanzanian Rhodolite Garnet 0.609ct Loose Gemstone
Sale price¥8,800
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.