Item Code: OPL015
Metric Dimensions: 31 x 20 x 7 mm
Imperial Dimensions: 1 1/4” x 3/4” x 3/8”
Weight: 36.5 carats ( 7.3 grams)
An interestingly patterned Boulder Opal with cavities of violet, indigo and white precious 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.