Australian Opal 1.047ct Loose
Sale price¥14,800
Australian Opal 1.203ct Loose
Sale price¥12,800
Australian black opal 1.744ct loose
Sale price¥39,800
Australian black opal 0.959ct loose stone
Sale price¥18,800
Australian black opal 0.296ct loose stone
Sale price¥8,800
Australian black opal 0.357ct loose stone
Sale price¥12,800
Mexican Cantera Opal 15.195ct Loose
Sale price¥18,800
Mexican Fire Opal 1.891ct Loose
Sale price¥24,800
[E_27 Yurakucho Marui Take-out] Mexican Fire Opal 1.348ct Loose
Sale price¥19,800
Mexican Fire Opal 1.104ct Loose
Sale price¥9,800
Mexican Fire Opal 0.403ct Loose
Sale price¥9,800
Australian black opal 2.277ct loose stone (play of color on both sides)
Sale price¥34,800
Australian black opal 0.676ct loose stone
Sale price¥15,800
Mexican egg-in-opal 1.582ct loose stone
Sale price¥18,800
Mexican egg-in-opal 1.243ct loose stone
Sale price¥14,800
Mexican egg-in-opal 0.865ct loose stone
Sale price¥14,800
Mexican egg-in-opal 0.672ct loose stone
Sale price¥12,800
Mexican egg-in-opal 0.627ct loose stone
Sale price¥8,800
Ethiopian Opal 0.466ct Loose (Heart Shape, Faceted Cut)
Sale price¥3,980
Ethiopian Opal 0.294ct Loose (Heart Shape, Faceted Cut)
Sale price¥6,980
Australian shell opal 53.277ct rough stone
Sale price¥59,800
Australian shell opal (shell opal) 96.177ct rough stone
Sale price¥69,800
Mexican Fire Opal 0.277ct Loose (Faceted Cut)
Sale price¥5,980
Mexican Fire Opal 0.102ct Loose (Faceted Cut)
Sale price¥6,980
Mexican Fire Opal 0.472ct Loose (Star Cut, Faceted Cut)
Sale price¥9,800
Mexican Fire Opal 0.564ct Loose (Faceted Cut)
Sale price¥15,800
Mexican Fire Opal 0.290ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Opal 0.502ct Loose (Faceted Cut)
Sale price¥12,800
Mexican Opal 0.790ct Loose (Contrarus Opal, Faceted Cut)
Sale price¥18,800
Mexican Hyalite Opal 0.774ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Hyalite Opal 7.5mm/1.221ct Loose (Faceted Cut)
Sale price¥14,800
Mexican Opal 1.205ct Loose (Contrarus Opal, Faceted Cut)
Sale price¥29,800
[E_27 Yurakucho Marui Take-out] 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
Mexican cantera opal 17.528ct loose
Sale price¥39,800
Mexican cantera opal 11.914ct loose
Sale price¥19,800
Mexican cantera opal 8.100ct loose
Sale price¥19,800
Opal from Indonesia 0.323ct loose
Sale price¥8,800
Opal from Indonesia 0.217ct loose
Sale price¥5,980
Mexican Water Opal 0.598ct Loose (Contralus Opal)
Sale price¥9,800
[Mr. Sanjay] Mexican water opal 3.161ct loose (Contrarus opal)
Sale price¥69,800
Opal 6mm/0.590ct loose (rose cut)
Sale price¥8,800
Mexican Fire Opal 1.374ct Loose
Sale price¥45,800
Mexican Water Opal 1.280ct Loose (Contralus Opal)
Sale price¥29,800
Mexican Water Opal 1.192ct Loose (Contralus Opal)
Sale price¥39,800
Mexican Opal 0.796ct Loose (Contralus Opal)
Sale price¥24,800
Mexican Water Opal 2.623ct Loose (Contralus Opal)
Sale price¥55,800

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.

The fifth reprint has been decided and is now on sale at bookstores nationwide and online.
Written by KARATZ, book “Jewelry Illustrated Book”
The book provides explanations about over 300 types of gemstones, from new standard birthstones to rare stones that are hard to find, as well as a diary of our company representative, Mr. Koyama's, gemstone shopping experience in Thailand and Sri Lanka, and tips for photographing gemstones, allowing you to learn about the appeal of gemstones from various perspectives.