Birthstone list
Unheated silky pink sapphire from Vietnam 0.202ct loose
Sale price¥8,800
Benitoite 0.091ct loose (emerald cut)
Sale price¥29,800
Pt900 ice blue diamond 0.333ct/0.333ct earrings
Sale price¥98,000
Colombian oil-free emerald 0.220ct loose GIA
Sale price¥248,000
Rubellite 7.068ct loose Japanese-German book
Sale price¥498,000
Paraiba tourmaline from Mozambique 0.240ct loose
Sale price¥35,800
Paraiba tourmaline from Mozambique 0.414ct loose
Sale price¥55,800
Paraiba tourmaline from Mozambique 0.130ct loose
Sale price¥22,800
Paraiba tourmaline from Mozambique 0.246ct loose
Sale price¥39,800
Blue tourmaline 0.369ct loose Japanese-German book
Sale price¥8,800
Brazilian imperial topaz 0.359ct loose
Sale price¥15,800
Brazilian imperial topaz 2.093ct loose
Sale price¥29,800
Australian black opal 0.559ct loose
Sale price¥12,800
Australian black opal 0.616ct loose
Sale price¥12,800
Australian black opal 0.310ct loose
Sale price¥8,800
Paraiba tourmaline from Mozambique 0.195ct loose
Sale price¥15,800
Paraiba tourmaline from Mozambique 0.083ct loose
Sale price¥6,580
Paraiba tourmaline from Mozambique 0.089ct loose
Sale price¥7,980
Diamond 0.534ct rough stone
Sale price¥9,800
Brazilian unheated particolor Paraiba tourmaline 0.84ct loose GIA
Sale price¥2,580,000
[Dandelion cut] Ametrine 14mm/9.238ct loose
Sale price¥59,800
Sri Lankan Ratotta Topaz 9.926ct Loose (White Topaz)
Sale price¥19,800
Sri Lankan Ratotta Topaz 9.589ct Loose (White Topaz)
Sale price¥15,800
Sri Lankan Ratotta Topaz 4.170ct Loose (White Topaz)
Sale price¥8,800
Sri Lankan Ratotta Topaz 7.709ct Loose (White Topaz)
Sale price¥15,800
Silky diamond 2.7mm/0.086ct loose
Sale price¥14,800
Silky diamond 2.8mm/0.097ct loose
Sale price¥14,800
Silky diamond 2.7mm/0.090ct loose
Sale price¥12,800
Indigolite tourmaline 0.691ct loose
Sale price¥18,800
Indigolite tourmaline 0.674ct loose
Sale price¥9,800
Indigolite tourmaline 0.386ct loose
Sale price¥7,980
Indigolite tourmaline 0.750ct loose
Sale price¥14,800
Indigolite tourmaline 0.842ct loose
Sale price¥14,800
Bicolor sapphire from Tanzania 0.184ct loose
Sale price¥6,980
Pink tourmaline 0.645ct loose
Sale price¥9,800
Bicolor tourmaline 0.675ct loose
Sale price¥6,980
Bicolor tourmaline 0.974ct loose
Sale price¥15,800
Silky sapphire from Sri Lanka 1.086ct loose
Sale price¥15,800
Silky sapphire from Sri Lanka 0.632ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 0.928ct loose
Sale price¥9,800
Silky sapphire from Sri Lanka 0.920ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 1.036ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.981ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 0.868ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 1.080ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 0.627ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 1.319ct loose
Sale price¥15,800
Ubaite/dravite tourmaline 3.157ct rough stone
Sale price¥9,800
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.