Beautiful Oval Shape, Australian Lightning Ridge A Lady's Face Opal Carving, on a Black Onyx Plaque. 

A Loose Stone, with Overall Green & Reddish fire on White colour Opal.

Size in MM: 25 x 20 x 3 thick.

Shape: Oval Shape as shown in the photo.

Stone Name: Natural Genuine Australian Opal Loose Stone.

Natural or Lab Grown: This are a 100% Genuine and Natural Stones.Not man made.

1A.