Natural Boulder Opal from Yowah Opal Field, Queensland Australia. Hand-shaped and polished gemstone with. This beautiful stone has natural inclusions as shown in photos, it should be admired in the sunlight.Ring Size: US 8 / 18.5mm. For further info on Opal and Opal Care please visit. Sent with Australia Post Small Box/Satchel with Tracking. The item "Queensland Boulder Opal Ring Australian Natural Gem Sterling Silver 925 Jewelry" is in sale since Saturday, February 13, 2021. This item is in the category "Jewellery & Watches\Fine Jewellery\Rings". The seller is "eclipse-72" and is located in Cannonvale, QLD. This item can be shipped worldwide.