Birthstone list
Mozambican Rhodolite Garnet 3.161ct Loose
Sale price¥22,800
Tanzanian Rhodolite Garnet 2.081ct Loose Stone, Japan-Germany Exchange
Sale price¥18,800
Brazilian Swiss Blue Topaz 13.287ct Loose Stone
Sale price¥18,800
Tanzanian Almandine Garnet 2.972ct Loose Stone
Sale price¥18,800
Tanzanian Rhodolite Garnet 3.486ct Loose Stone
Sale price¥24,800
Tanzanian Almandine Garnet 1.564ct Loose Stone
Sale price¥12,800
Tanzanian Rhodolite Garnet 5.3mm/0.903ct Loose Stone
Sale price¥9,800
Green sapphire from Madagascar 0.199ct loose
Sale price¥6,980
Yellow sapphire from Madagascar 0.181ct loose
Sale price¥4,980
Ice blue sapphire from Madagascar 0.181ct loose
Sale price¥6,980
Brazilian bicolor tourmaline 1.764ct loose
Sale price¥32,800
Brazilian bicolor tourmaline 1.565ct loose
Sale price¥19,800
Ice blue sapphire 3.813ct loose
Sale price¥49,800
Russian Demantoid Garnet 0.192ct Loose Stone
Sale price¥79,800
Illusion Bicolor Tourmaline 3.202ct Loose Stone
Sale price¥69,800
Mozambique rubellite 0.814ct loose stone
Sale price¥39,800
Afghanistan Green Tourmaline 7.8mm/1.738ct Loose Stone
Sale price¥59,800
Sri Lankan blue sapphire 0.187ct loose stone
Sale price¥29,800
American Peridot 0.635ct Loose Stone
Sale price¥12,800
American Peridot 0.283ct Loose Stone
Sale price¥8,800
Pakistani Peridot 0.649ct Loose Stone
Sale price¥8,800
Pakistani Peridot 5.2mm/0.562ct Loose Stone
Sale price¥9,800
Madagascar Bicolor Sapphire 0.266ct Loose
Sale price¥16,800
Australian boulder opal 3.122ct loose stone
Sale price¥29,800
Mexican Opal 0.233ct Loose (Faceted)
Sale price¥12,800
Mexican Hyalite Opal 1.420ct Loose
Sale price¥18,800
Mexican Hyalite Opal 0.743ct Loose
Sale price¥12,800
Brazilian pink tourmaline 2.765ct loose stone
Sale price¥69,800
Brazilian mint-colored emerald 0.491ct loose stone
Sale price¥15,800
Madagascar Bicolor Sapphire 0.318ct Loose
Sale price¥25,800
Unheated Pigeon Blood Ruby from Myanmar, 0.640ct Loose, AIGS
Sale price¥258,000
Colombian emerald 0.176ct loose stone
Sale price¥59,800
Brazilian pink tourmaline 0.577ct loose stone
Sale price¥18,800
Brazilian bicolor tourmaline 2.341ct loose stone
Sale price¥79,800
Brazilian pink tourmaline 1.515ct loose stone
Sale price¥98,000
Tanzanian bicolor sapphire 0.486ct loose stone
Sale price¥12,800
Brazilian Paraiba Tourmaline in Quartz 0.780ct Loose Stone
Sale price¥15,800
Brazilian citrine 5.4mm/0.769ct loose stone
Sale price¥6,980
Brazilian citrine 1.125ct loose stone
Sale price¥9,800
Brazilian citrine 1.962ct loose stone
Sale price¥9,800
Brazilian citrine 1.659ct loose stone
Sale price¥9,800
Brazilian citrine 1.644ct loose stone
Sale price¥9,800
Madagascar Bicolor Sapphire 0.633ct Loose
Sale price¥39,800
Russian Demantoid Garnet (Horsetail) 3.8mm/0.280ct Loose Stone
Sale price¥49,800
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.