Item Code: OPL004
Metric Dimensions: 42 x 30 x 6 mm
Imperial Dimensions: 1 5/8” x 1 1/4” x 1/4”
Weight: 89 carats (17.8 grams)
A beautifully patterned Boulder Opal from Queensland, Australia with pockets of precious black opal. Boulder Opal forms within cavities of ironstone boulders and fossilized sandstone. It was formed when silica-rich water seeped down into fissures of the host rock and slowly solidified into spheres of opal over millions of years.