Comprising predominantly Mexican and Australian examples including: a heart-shaped crystal opal doublet (painted on the reverse), Mintabie, Australia, weighing 1.92 carats; an oval cabochon Andamooka matrix opal, weighing 0.5 carats and measuring 18 x 13; an emerald-cut colorless opal, possibly from Bohemia, weighing 2.08 carats and measuring 9.5 x 8.5mm; an oval-cut jelly opal, Mexico, weighing approximately 1.5 carats, a cushion-shaped white crystal opal cabochon, Coober Pedy, Australia, weighing approximately 4.23 carats and measuring 12 x 14mm; an Australian jelly opal doublet, having a quartz top, opal and painted reverse, weighing approximately 4.5 carats and measuring 12.3 x 9.5mm; a jelly opal with painted reverse, weighing approximately 3.04 carats and measuring 13.2 x 9.8mm; a Mexican orange jelly opal with painted reverse, weighing approximately 2.0 carats; a circular 12mm white cabochon opal, weighing approximately 4.0 carats; an oval cabochon Andamooka matrix opal with green flash, weighing approximately 2.80 carats and measuring 13.7 x 9.6mm; a Nevada chocolate crystal opal, weighing approximately 6.0 carats and measuring 16.5 x 14.5mm; pair of Mexican crystal opal mosaics (suitable for mounting as cufflinks) with glass backing, measuring 20 x 15mm; an Australian pear-shaped white crystal opal, weighing approximately 5.5 carats, a jelly opal doublet, weighing approximately 2.5 carats; an oval shaped Lightning Ridge solid black opal, weighing approximately 2.0 carats and a pear-shaped black opal, weighing approximately 1.5 carats. (lot)