Australian Opal Beads Faceted Rounds measure approximately 4mm to 6.5mm diameter in size, these Opals have a waxy luster with excellent faceting creating a symmetrical round shape, the beads show moderate matrix of a bluish grey hue, these Australian Opal beads have play of color in blue-violet-yellow hues, their body colors are a dark bluish grey to a light cream hue, these gems present with an opaque quality, and these smaller than average sized rounds in Opal are mined in Australia.