Birthstone list
Paraiba tourmaline from Mozambique 1.481ct loose (CuO:0.3%, MnO:4.3%)
Sale price¥158,000
Mexican Fire Opal 5mm/0.342ct Loose (Contralus Opal)
Sale price¥9,800
Ruby from Greenland 0.307ct loose with certificate
Sale price¥15,800
Mexican Fire Opal 1.624ct Loose (Contralus Opal)
Sale price¥12,800
Mexican Fire Opal 1.808ct Loose (Contralus Opal)
Sale price¥35,800
Tanzanian Lavender Tanzanite 2.219ct Loose Stone
Sale price¥55,800
Sri Lankan Purple Sapphire 0.502ct Loose
Sale price¥7,980
[Cat cut] Bankacha sapphire 0.812ct loose stone
Sale price¥9,800
Colombian Trapiche Emerald (Reverse Trapiche) 4.3mm/0.329ct Rough Stone
Sale price¥29,800
Brazilian Topaz Cat's Eye 7.869ct Loose Stone
Sale price¥8,800
Brazilian Topaz Cat's Eye 8.781ct Loose Stone
Sale price¥8,800
Rubellite from Mozambique 0.748ct loose
Sale price¥9,800
Mexican cantera opal 32.560ct loose
Sale price¥29,800
Mexican Fire Opal 0.353ct Loose
Sale price¥4,980
Ruby from Greenland 0.421ct loose with certificate
Sale price¥18,800
Australian boulder opal 14.860ct loose
Sale price¥18,800
Australian boulder opal 1.026ct loose
Sale price¥3,980
Mexican cantera opal 14.740ct loose
Sale price¥14,800
Tanzanian Dragon Garnet 0.746ct Loose Stone
Sale price¥17,800
Diamond (cabochon cut) 0.196ct loose
Sale price¥29,800
Brazilian green tourmaline 0.541ct loose stone
Sale price¥4,980
Brazilian Paraiba Tourmaline in Quartz 6.0mm/0.708ct Loose Stone
Sale price¥15,800
0.400ct Madagascar Pink Sapphire Loose (Heart Shape)
Sale price¥19,800
Mexican cantera opal 12.401ct loose
Sale price¥8,800
American Benitoite 0.100ct Loose Stone (Emerald Cut)
Sale price¥32,800
Russian demantoid garnet (horsetail recognized) 2.8mm/0.187ct loose
Sale price¥18,800
Russian demantoid garnet (horsetail recognized) 2.9mm/0.165ct loose
Sale price¥24,800
Sri Lankan tourmaline 4.860ct loose stone (cushion cut)
Sale price¥12,800
Mexican fire opal 6mm/0.698ct loose (rose cut)
Sale price¥14,800
Russian demantoid garnet (horsetail recognized) 4.5mm/0.423ct loose
Sale price¥69,800
Bicolor tourmaline 1.704ct loose
Sale price¥12,800
Bicolor tourmaline 1.440ct loose
Sale price¥9,800
Pink tourmaline 0.734ct loose
Sale price¥7,980
Pink tourmaline 1.011ct loose
Sale price¥8,800
Pink tourmaline 0.553ct loose
Sale price¥6,980
Pink tourmaline 0.506ct loose
Sale price¥5,980
Pink tourmaline 0.377ct loose
Sale price¥3,980
Colombian trapiche emerald (reverse trapiche) 0.101ct rough stone
Sale price¥12,800
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.