Ethiopian Opal 5.2mm/0.688ct Loose (Sphere)
Sale price¥6,980
Mexican Cantera Opal 4.835ct Loose
Sale price¥19,800
Australian Shell Opal (Shell Opal) 73.321ct Rough Stone
Sale price¥49,800
Ethiopian Opal 5.4mm/0.818ct Loose (Sphere Cut)
Sale price¥9,800
Amazon Green Opal 0.814ct Loose (Faceted Cut)
Sale price¥8,800
Amazonian green opal 0.517ct loose stone (faceted cut)
Sale price¥8,800
Amazon Green Opal 0.285ct Loose (Faceted Cut)
Sale price¥6,980
Ethiopian honeycomb opal 2.056ct loose stone
Sale price¥17,800
Iron Opal 184.250ct Loose Stone, Japan-Germany Exchange
Sale price¥19,800
Mexican Cantera Opal 20.655ct Loose
Sale price¥19,800
Synthetic Opal 1.914ct Loose
Sale price¥15,800
Mexican Opal 1.199ct Loose (Contralus Opal)
Sale price¥39,800
Mexican Cantera Opal 3.297ct Loose
Sale price¥29,800
Ethiopian Opal 167.191ct Rough Stone
Sale price¥39,800
Mexican Fire Opal 6.117ct Loose (Bicolor Fire Opal)
Sale price¥98,000
Mexican Cantera Opal 5.204ct Loose
Sale price¥12,800
Amazon Green Opal 1.372ct Loose (Faceted Cut)
Sale price¥8,800
Amazonian green opal 1.814ct loose stone (faceted cut)
Sale price¥9,800
Amazon Green Opal 0.781ct Loose (Faceted Cut)
Sale price¥7,980
Mexican Cantera Opal 7.720ct Loose
Sale price¥22,800
Mexican Cantera Opal 4.158ct Loose
Sale price¥15,800
Australian black opal 3.242ct loose stone
Sale price¥69,800
Australian black opal 3.322ct loose stone
Sale price¥98,000
Australian black opal 0.357ct loose stone
Sale price¥8,800
Ethiopian Opal 4.9mm/0.625ct Loose (Sphere)
Sale price¥5,980
Ethiopian Opal 5.2mm/0.752ct Loose (Sphere)
Sale price¥6,980
Mexican Fire Opal 0.923ct Loose
Sale price¥12,800
Mexican Cantera Opal 13.531ct Loose
Sale price¥69,800
Mexican Cantera Opal 10.986ct Loose
Sale price¥29,800
Mexican Cantera Opal 8.832ct Loose
Sale price¥24,800
Mexican Cantera Opal 7.262ct Loose
Sale price¥19,800
Mexican Cantera Opal 6.710ct Loose
Sale price¥22,800
Mexican Cantera Opal 6.205ct Loose
Sale price¥9,800
Mexican Cantera Opal 5.887ct Loose
Sale price¥12,800
[E_27 Yurakucho Marui Takeout] Synthetic Opal 1.139ct Loose
Sale price¥12,800
Synthetic Opal 1.804ct Loose
Sale price¥14,800
Mexican Fire Opal 0.718ct Loose
Sale price¥9,800
Mexican Fire Opal 0.593ct Loose (Faceted Cut)
Sale price¥9,800
[12551529] Australian black opal 2.233ct loose stone
Sale price¥69,800
[12551148] Australian black opal 3.890ct loose stone
Sale price¥69,800
[E_27 Yurakucho Marui Take-out] Opal 0.459ct loose (egg-in opal)
Sale price¥8,800
Ethiopian Opal 0.788ct Loose (Sphere)
Sale price¥7,980
Ethiopian Opal 0.629ct Loose (Sphere)
Sale price¥7,980
Yellow Opal 0.372ct Loose (Faceted Cut)
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.

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.