A 25 X 12 mm. APPROX. IN SIZE FREE-FORM ALL NATURAL BOULDER OPAL FROM AUSTRALIA CRAFTED WITH 22-GAUGE 12-KT. ROLLED GOLD WIRE. IT MEASURES APPROX. 2-INCHES FROM THE BOTTOM OF THE STONE TO THE TOP OF THE BAIL. A BEAUTIFUL STONE WITH BLUE VEINING OF OPAL RUNNING ITS NATURAL PATH IN BOULDER STONE.