Opal Stone – Lab-made, Cabochon, White
You can see the snakeskin pattern in this synthetic opal best in the upper-left green area and somewhat less clearly in the center-right yellow…
Opal Stone – Natural, Cabochon, Yellow, 13.23 ct
In this Ethiopian opal cut by AGTA Spectrum Award-winner Mark Kaufman, you can see the “brushstroke” appearance that characterizes the play…
Opal Stone – Natural, Cabochon, Blue
The light tan line between the opal and the ironstone may be a glue layer. © Urth Kandi Jewelry. Used with permission.
Opal Stone – Assembled, Cabochon, White
Opal triplets, 2.70 carats each. Note how these assembled gems have a noticeably glass-like sheen. Also, their color remains on the bottom and…
Black Opal – Assembled, Cabochon, Black
Assembled black opal doublet. Photo by CRPeters. Licensed under CC By-SA 3.0.
Black Opal – Natural, Cabochon, Black
Note the protective v-shaped prong at the tip of this teardrop-cut black opal ring. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Fire Opal – Natural, Faceted, Orange, 22.45 ct
Fire opal (22.45 cts), Mexico. Photo © Joel E. Arem, PhD, FGA. Used with permission.
Opal Stone – Natural, Carved, White
Freeform jelly opal carving. Carving by Martha Borzoni. Photo by Jessa and Mark Anderson. Licensed under CC By 2.0.
Opal Stone – Natural, Other, Brown
Yowah nut opal. Photo by Ross Sedawie, Opal Auctions. Licensed under CC By-SA 4.0.
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