1.27 cts buying OPAL MULTICOLORED Australia. With Certificate of Authenticity

NAME OF THE NATURAL OPAL STONE
AVERAGE WEIGHT 1.27 carats
SIZE Oval cabochon
DIMENSIONS 5.1 x 6.7 x 3.6 mm
MULTICOLORED COLOR
TRANSLUCENT CLARTE
EXCELLENT CHANDELIER
ORIGIN Australia
DURATION 5.5-6.5
DENSITY 1.9-2.5
REFRACTION INDEX 1.544-1.553
UNHEATED TREATMENT
QUANTITY 1 piece(s)
REFERENCE 20121000A buying