Bright blue with some green in this 'free-form' drop shaped opal from the Mintabie (SA) opal field. Just right for a ring or pendant stone! ( This opal has a sandstone spot, which is very common for Mintabie opal. Doesn't devalue the opal.)
Opal size is 10.2 x 20.6 x 3.73 mm and weight is 4.75 ct.

We photographed the opal on a piece of polished Mintabie specimen opal.(see SP0150) for the specimen!