2-sided 77.5 ct Boulder Opal Cabochon - Arkadia Designs
2-sided 77.5 ct Boulder Opal Cabochon - Arkadia Designs
2-sided 77.5 ct Boulder Opal Cabochon
2-sided 77.5 ct Boulder Opal Cabochon - Arkadia Designs
2-sided 77.5 ct Boulder Opal Cabochon - Arkadia Designs
2-sided 77.5 ct Boulder Opal Cabochon

2-sided 77.5 ct Boulder Opal Cabochon

1 Review
Regular price $44.00 Save $0.00
/

Only 1 items in stock!

Specifications

Item Code: OPL001
Metric Dimensions:  37 x 31 x 6 mm
Imperial Dimensions: 1 1/2” x 1 1/4” x 1/4”
Weight: 77.5 carats (15.5 grams)

Unique Qualities

A 2-sided Boulder Opal from Queensland, Australia that was polished free form, displaying the ironstone matrix and flashes of precious opal seams. 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.

Gem Opal is a hydrated amorphous silica. The internal structure of gem quality Opal causes it to diffract light, causing a play of color, which can display virtually all colors from blue, to pink, green, yellow, white and black. Opal has microscopic spheres that create the play of color called opalescence.

Opal Gemstone Properties