1.85 Carat Crystal Opal, Oval, 11.5 x 8.2 mm, Australia -
Amazon.com: Dazzlegems 4.05 quilates 100% A+Natural etíope Welo Opal Rough Stone, Cristal crudo, Piedra natal de octubre, Piedra de nacimiento de octubre, Piedra de opal, Piedra escogida a mano, Tamaño: 0.354 x
Gem Crystal Boulder Opal 7.6 ct - Opal Galaxy
1.45 ct gem crystal opal 12x7x3mm - Black Opal Direct
Globo de cristal opal - Recambio lámpara de bola (30cm)
930ct Non Hydrophane Crystal Ethiopian Opal - Mineral Mike
Twinkling Black Crystal Opal - 2.28ct - The Opal Man
Golden Crystal Opal from Brazil – Liga Kaulina
Crystal Opal Cushion Cut 2.9ct at Treasurion.com
Solid Unset Crystal Opal | Opals Down Under
Crystal Opals: History, Symbolism, Meanings & More | Opal Auctions
Australian Crystal Opal - Teragems - Stephen Rosenberg Gemmology
Rainbow Crystal Boulder Opal 3.6 ct - Opal Galaxy
0.82 ct crystal opal 8.9x5.6x2.5mm - Black Opal Direct