Bicolor tourmaline 4.448ct loose stone
Sale price¥55,800
[On sale June 2nd, 10 PM] Spanish Sphalerite 4.445ct Loose Stone
Sale price¥79,800
[Koshu Precious Stones plusthree] Citrine 5.121ct Loose
Sale price¥35,800
Mexican Opal 1.666ct Loose
Sale price¥14,800
Spanish Sphalerite 11mm/7.286ct loose stone
Sale price¥79,800
Spanish sphalerite 6.392 ct loose stone
Sale price¥79,800
Unheated Brazilian Imperial Topaz (Sherry Color) 0.314ct Loose
Sale price¥22,800
Oregon Sunstone 0.575ct loose
Sale price¥9,800
Sunstone (Illusion Sunstone) 0.553ct Loose
Sale price¥7,980
Ethiopian Opal 2.131ct Loose
Sale price¥9,800
Ethiopian Opal 1.694ct Loose
Sale price¥7,980
Brazilian Imperial Topaz 0.413ct Loose Stone
Sale price¥9,800
Brazilian Imperial Topaz 0.402ct Loose Stone
Sale price¥9,800
Mexican Fire Opal (faceted) 0.645ct Loose Stone
Sale price¥18,800
Oregon Sunstone from the United States 0.941ct loose stone
Sale price¥12,800
Brazilian Morganite 10mm/4.535ct Loose Stone
Sale price¥148,000
Madagascar Pezzottaite 0.229ct loose stone
Sale price¥15,800
Mexican Fire Opal 1.833ct Loose
Sale price¥39,800
Mexican Fire Opal 2.235ct Loose
Sale price¥19,800
Mexican Fire Opal 1.743ct Loose
Sale price¥18,800
Mexican Fire Opal 3.425ct Loose
Sale price¥22,800
Brazilian Imperial Topaz 0.826ct Loose
Sale price¥18,800
Oregon Sunstone 0.217ct loose
Sale price¥4,980
Oregon Sunstone 0.226ct loose
Sale price¥4,980
Sunstone (Illusion Sunstone) 1.908ct loose
Sale price¥8,800
South African Rhodochrosite Loose Stone 0.749 ct
Sale price¥98,000
Brazilian Imperial Topaz 0.357ct Loose Stone
Sale price¥12,800
Brazilian Imperial Topaz 0.349ct Loose Stone
Sale price¥12,800
Brazilian Imperial Topaz 0.153ct Loose
Sale price¥5,980
Mexican egg-in-opal 0.865ct loose stone
Sale price¥12,800
Mexican egg-in-opal 0.672ct loose stone
Sale price¥11,000
South African rhodochrosite 2.477ct loose Japanese-German edition
Sale price¥398,000
Australian rainbow lattice sunstone 0.378ct loose
Sale price¥4,980
Australian rainbow lattice sunstone 0.498ct loose
Sale price¥2,980
Australian rainbow lattice sunstone 0.449ct loose
Sale price¥4,980
Australian rainbow lattice sunstone 0.354ct loose
Sale price¥4,980
Oregon Sunstone 8.256ct 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.