8.39 cts buying CALCEDOINE Africa. With Certificate of Authenticity

buying NAME OF NATURAL Chalcedony STONE
AVERAGE WEIGHT 8.39 carats
Octagonal SIZE
DIMENSIONS 11.2 x 11.4 x 6.7 mm
COLOR Lavender Blue
TRANSLUCENT CLARTE
GOOD CHANDELIER
ORIGIN Africa
DURATION 6.5-7
DENSITY 2.58 - 2.64
REFRACTION INDEX 1.530 - 1.540
TREATMENT Unheated
QUANTITY 1 piece(s)
REFERENCE 2012801A