Birthstone list
South African yellow diamond (makeable) 0.159ct rough stone
Sale price¥15,800
South African gray diamond (makeable) 0.169ct rough stone
Sale price¥15,800
South African yellow diamond (makeable) 0.193ct rough stone
Sale price¥9,800
South African yellow diamond (makeable) 0.202ct rough stone
Sale price¥17,800
Paraiba tourmaline from Brazil 0.132ct loose (CuO:2.1%.MnO:2.2%)
Sale price¥188,000
Unheated silky pink sapphire from Vietnam 0.161ct loose
Sale price¥7,980
Paraiba tourmaline from Mozambique 0.092ct loose
Sale price¥9,800
Brazilian ametrine 8.849ct loose
Sale price¥12,800
Benitoite 0.123ct loose (emerald cut)
Sale price¥39,800
Benitoite 0.104ct loose (emerald cut)
Sale price¥29,800
[Mr. Sanjay] Mexican water opal 3.161ct loose (Contrarus opal)
Sale price¥69,800
Bicolor tourmaline 0.467ct loose
Sale price¥6,980
Pink tourmaline 0.517ct loose
Sale price¥6,980
Mexican Water Opal 0.598ct Loose (Contralus Opal)
Sale price¥9,800
Paraiba tourmaline from Brazil 0.117ct loose
Sale price¥19,800
Paraiba tourmaline from Mozambique 1.057ct loose
Sale price¥24,800
White topaz 1.140ct loose
Sale price¥5,980
Pink tourmaline 6mm/0.990ct loose stone
Sale price¥12,800
Green Tourmaline 6mm/0.991ct Loose
Sale price¥15,800
Opal from Indonesia 0.217ct loose
Sale price¥5,980
Pink tourmaline 0.489ct loose
Sale price¥6,980
Pink tourmaline 0.460ct loose
Sale price¥6,980
Pink tourmaline 0.669ct loose
Sale price¥9,800
Pink tourmaline 0.984ct loose
Sale price¥9,800
Paraiba tourmaline from Mozambique 0.227ct loose
Sale price¥25,800
Paraiba tourmaline from Mozambique 0.148ct loose
Sale price¥14,800
Mexican cantera opal 8.100ct loose
Sale price¥19,800
Mexican cantera opal 11.914ct loose
Sale price¥19,800
Mexican cantera opal 17.528ct loose
Sale price¥39,800
Ubaite/dravite tourmaline 3.157ct rough stone
Sale price¥9,800
Silky sapphire from Sri Lanka 1.319ct loose
Sale price¥15,800
Silky sapphire from Sri Lanka 0.627ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 1.080ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 0.868ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.981ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 1.036ct loose
Sale price¥12,800
Silky sapphire from Sri Lanka 0.920ct loose
Sale price¥14,800
Silky sapphire from Sri Lanka 0.928ct loose
Sale price¥9,800
Silky sapphire from Sri Lanka 0.632ct loose
Sale price¥8,800
Silky sapphire from Sri Lanka 1.086ct loose
Sale price¥15,800
Bicolor tourmaline 0.974ct loose
Sale price¥15,800
Bicolor tourmaline 0.675ct loose
Sale price¥6,980
Pink tourmaline 0.645ct loose
Sale price¥9,800
Bicolor sapphire from Tanzania 0.184ct loose
Sale price¥6,980
Indigolite tourmaline 0.842ct loose
Sale price¥14,800
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.