Natural boulder opal split pair of rubs. Brilliant patterns of blues, purples and greens. Cut on saw from rough boulder opal rock and split on colour bar. Approx. total weight 19.9 grams Approx. max. dimensions (1) 32 x 20 x 8 (2) 31 x 21 x 8 mm Mined in Winton area of central Queensland, Australia. Photo taken under indoor white light.
