Mexican Cantera Opal 3.604ct Loose
Sale price¥7,980
Mexican Fire Opal 1.755ct Loose
Sale price¥29,800
Mexican Fire Opal 1.341ct Loose
Sale price¥39,800
Mexican Hyalite Opal 0.171ct Loose (fluoresces even in sunlight)
Sale price¥17,800
Australian Opal 6.799ct Loose Stone, Japan-Germany Exchange
Sale price¥59,800
Hokkaido Opal 12.492ct Loose Patch
Sale price¥7,980
Australian Green Opal 4.990ct Loose
Sale price¥9,800
Australian black opal 0.386ct loose stone
Sale price¥39,800
Mexican Yellow Opal 0.673ct Loose
Sale price¥8,800
Mexican Yellow Opal 0.428ct Loose
Sale price¥8,800
Australian Opal 1.916ct Loose
Sale price¥8,800
Australian Opal 3.639ct Loose
Sale price¥14,800
Mexican Cantera Opal 5.647ct Loose
Sale price¥19,800
Mexican Cantera Opal 2.809ct Loose
Sale price¥25,800
Mexican Cantera Opal 3.280ct Loose
Sale price¥9,800
Mexican Cantera Opal 4.973ct Loose
Sale price¥15,800
Mexican Cantera Opal 7.460ct Loose
Sale price¥29,800
Mexican Cantera Opal 1.794ct Loose
Sale price¥8,800
Mexican Cantera Opal 2.982ct Loose
Sale price¥14,800
Mexican Cantera Opal 1.534ct Loose
Sale price¥8,800
Mexican Cantera Opal 4.542ct Loose
Sale price¥12,800
Mexican Cantera Opal 11.105ct Loose
Sale price¥12,800
Mexican Fire Opal 3.639ct Loose
Sale price¥7,980
Mexican Fire Opal 1.578ct Loose
Sale price¥12,800
Mexican Fire Opal 0.780ct Loose
Sale price¥12,800
[Clover in cut] Mexican opal 7mm/0,648ct {Collaboration} Loose patch
Sale price¥45,800
Australian Shell Opal (Shell Opal) 51.801ct Rough Stone
Sale price¥25,800
Ethiopian Opal 1.433ct Loose
Sale price¥3,980
Mexican Fire Opal 6.7mm/0.953ct Loose
Sale price¥25,800
Mexican Fire Opal 7.1mm/0.911ct Loose
Sale price¥25,800
Mexican Fire Opal 4.9mm/0.333ct Loose
Sale price¥8,800
Australian Boulder Opal 0.768ct Loose
Sale price¥12,800
Australian black opal 9.709ct loose stone
Sale price¥158,000
Australian Boulder Opal 23.164ct Loose
Sale price¥128,000
Mexican Fire Opal 0.576ct Loose (Faceted Cut)
Sale price¥9,800
Mexican Opal 0.492ct Loose (Faceted Cut)
Sale price¥9,800
Mexican Fire Opal 0.212ct Loose (Faceted Cut)
Sale price¥8,800
Mexican Fire Opal 1.222ct Loose (Faceted Cut)
Sale price¥12,800
Australian White Opal 0.562ct Loose
Sale price¥8,800
Mexican Fire Opal 0.213ct Loose (Faceted Cut)
Sale price¥9,800
Mexican Fire Opal 0.356ct Loose (Faceted Cut)
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.

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.