Opal Stone – Natural, Faceted, Red, 15.5 ct
Cushion-cut cherry opal, 15.5 cts. Photo courtesy of liveauctioneers.com and I.M. Chait Gallery/Auctioneers.
Opal Stone – Natural, Faceted, Green, 7.08 ct
Cushion-cut hyalite, 7.08 cts, 16.9 x 10.9 mm, Brazil, SW UV illumination. © The Gem Trader. Used with permission.
Opal Stone – Natural, Faceted, Colorless, 7.08 ct
Cushion-cut hyalite, 7.08 cts, 16.9 x 10.9 mm, Brazil, daylight illumination. © The Gem Trader. Used with permission.
Opal Stone – Natural, Faceted, White, 5.70 ct
Moss opal, Idaho (5.70). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opal Stone – Natural, Tumbled, Blue
Boulder opals with play of color. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opal Stone – Natural, Other, Blue
Black blue opal (a black opal with blue body color). Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opal Stone – Natural, Cabochon, Black
Platinum ring with diamonds and a sugar-treated opal. Photo courtesy of liveauctioneers.com and Clars Auction Gallery.
Opal Stone – Lab-made, Cabochon, Red
Gilson synthetic opals. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opal Stone – Natural, Faceted, Colorless, 3.19 ct
“Contraluz” opal, Nevada (3.19). Photo © Joel E. Arem, PhD, FGA. Used with permission.
IGS Become Member