21.75ct Quilpie Boulder Opal Stone | #9 Brooches open and snap-on hinged bail

open and snap-on hinged bail

such as "rubellite" (red)

only found in North America

18kt rose gold

An Ornate Lightning Ridge Semi-Black Opal & Diamond Ring

21.75ct Quilpie Boulder Opal Stone | #9 Brooches open and snap-on hinged bailAustralian Boulder Opal: Weight (carats) 21. 75cts Dimensions (millimeters) 27. 15mm x 13. 81mm x 5. 93mm Origin Quilpie Mining District, Queensland, Australia Shape oval cabochon cut Colors blue, purple, green, orange Brightness of Color Play ( 1 to 5+) 1. 5 Darkness of Body (+1 to 5 ) N A Treatments Enhancements none, natural SKU Number #9 Additional Notes: Thickness of this stone makes it a versatile option for use in rings, pendants, and