Closeout Assorted Bag of 3 Australian Boulder Opals

Boulder Opal is exclusively found in Queensland, Australia, where veins and patches of precious opal form within rugged brown ironstone boulders. This stunning gem was created over millions of years ago when rainwater dissolved silica from the earth's surface, depositing it into natural cavities within the ironstone. As a result, Boulder Opals boasts exceptional durability, with it's ironstone backing providing a natural reinforcement that makes it more resistant to cracks and fractures compared to other opals. Clean with warm, soapy water. Avoid use of ultrasonic, steam cleaner and any sudden rapid heat changes. 

• Opaque
• Treatment: None (N)
• Rough originated near the city of Cunnamulla AU
• Shapes include Rectangles, Rounds, Triangles, Rounds, and just Free-form
• Sizes can range from a 21x7mm Rectangle to a 24x24mm square 
• Each bag has at least one Opal with higher Opalescence