Boulder Opal, 13.75ct from Queensland, Australia Worldopal as the movement exposes the

as the movement exposes the changes in pattern and colour the most

64  mm from Lighting Ridge

This green opal drop is truly one of a kind

This lovely Australian black opal gem is showing off a bright green play of color

Boulder Opal, 13.75ct from Queensland, Australia Worldopal as the movement exposes the13. 75ct, 19. 4x12. 5x6. 2mm from Queensland, Australia. Australian Boulder opals are natural doublets where precious opal layers has formed on ironstone matrix. This opal has a dark blue purple and green play of color displayed in beautiful pattern what looks like a moody sea. The opal has undulated surface and also purple crystal opal in on the back. It would make one of kind pendant or other jewelry piece. Please note that my camera is picking up