Huge and bright Ethiopian Welo opal 12,01ct  (12.01ct.)

Huge and bright Ethiopian Welo opal 12,01ct. with crystal body, nice and bright pattern. Clean. Top colors.

HD quality video below.
Weight- 12,01ct.
Body - Crystal (transparent)
Color/Brightness - 5/5
Pattern - Broad flash, Ribbon, Rolling flash.
Dimensions - 24,95 x 11,80 x 8,64mm
Shape - Oval (High dome)
Origin -Welo mine,  Ethiopia
Treatment - No (Untreated)
Hardness - 6 (on Mohs scale)

Video was maked under electrical lamp light source