Paraiba tourmaline from Mozambique 0.388ct loose
Sale price¥24,800
Dioptase from Namibia 0.229ct loose Japanese-German book
Sale price¥79,800
YAG (Yttrium Aluminum Garnet) 7mm/1.775ct Loose Stone
Sale price¥12,800
Strontium titanate 4.2mm/0.410ct loose stone
Sale price¥12,800
Strontium titanate 5mm/0.688ct loose stone
Sale price¥15,800
Synthetic rutile 5.8mm/0.904ct loose stone
Sale price¥15,800
Synthetic rutile 5mm/0.553ct loose stone
Sale price¥15,800
Amazon green opal 1.120ct loose
Sale price¥5,980
Rhodolite garnet 0.990ct loose
Sale price¥5,980
Oregon Sunstone 0.976ct loose
Sale price¥19,800
Tanzanite 0.449ct loose
Sale price¥6,980
Pink sapphire 0.225ct loose
Sale price¥6,980
Blue zircon 0.322ct loose stone
Sale price¥6,980
Blue zircon 0.397ct loose stone
Sale price¥7,980
Pink tourmaline 0.394ct loose
Sale price¥8,800
Australian opal 0.286ct loose
Sale price¥6,980
[Camellia cut] Opal 14mm/5.283ct loose with patch
Sale price¥98,000
[Sakura Incut] Goshenite 9mm/2.142ct loose with patch
Sale price¥39,800
[Rouge cut] Almandine garnet 2.076ct loose
Sale price¥12,800
[Rouge cut] Almandine garnet 2.090ct loose
Sale price¥12,800
Cornell pin from Tanzania 0.523ct loose
Sale price¥9,800
Blue zircon 2.483ct loose
Sale price¥9,800
Colombian Euclase 3.417ct rough stone
Sale price¥12,800
Paraiba tourmaline from Mozambique 0.229ct loose
Sale price¥12,800
Brazilian Paraiba tourmaline 0.420ct raw stone (CuO:1.6%, MnO:1.3%)
Sale price¥98,000
Colombian emerald cat's eye 0.110ct loose
Sale price¥12,800
Chrysoberyl cat's eye 2.283ct loose
Sale price¥22,800
Zircon 0.194ct loose
Sale price¥2,980
Zircon 0.416ct loose
Sale price¥4,980
Paraiba tourmaline from Mozambique 0.215ct loose
Sale price¥12,800
Diamond 0.052ct loose (trapeze cut, VS class equivalent)
Sale price¥8,800
Myanmar star diopside 0.898ct loose
Sale price¥12,800
Mexican Fire Opal 4.5mm/0.244ct Loose
Sale price¥12,800
Purple spinel 0.995ct loose stone
Sale price¥18,800
Indigolite tourmaline 0.260ct loose Japanese-German book
Sale price¥18,800
Paraiba tourmaline from Mozambique 0.207ct loose
Sale price¥12,800
Paraiba tourmaline from Mozambique 0.256ct loose
Sale price¥18,800
Dioptase from Namibia 3.1mm/0.132ct loose Japanese-German edition
Sale price¥69,800
Paraiba tourmaline from Brazil 0.34ct loose GIA
Sale price¥59,800
South African rhodochrosite 1.333ct loose Japanese-German edition
Sale price¥128,000
Bicolor grossular garnet 0.782ct loose
Sale price¥16,800
Petalite 2.858ct loose
Sale price¥9,800
White topaz 16.06ct loose
Sale price¥29,800
Yellow opal 17.283ct loose
Sale price¥34,800
Oregon Sunstone 1.157ct loose
Sale price¥9,800
Brazilian Medusa Quartz (Paraiba Quartz) 3.919ct loose
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.