Comment: Discovered in 2007 in Coober Pedy, this is a great example of the rarer & darker material that can be discovered in Coober. With vibrant blues, greens & even orange this large 16.50ct dark opal speaks for itself. 

NOTE: better images & videos coming soon 

Opal Origin: Coober Pedy 

Dimensions (WxLxH): 17x26x5mm

Opal type: Dark Opal