2.55 ct. Australian Boulder Opal

RockShop Verified independent store

→

Overview Specs Documentation This large boulder opal catches your eye with vibrant pinks, and accents of blue and green. A loose stone can be great for collectors, or to make a bea utiful piece of jewelry! 2.55ct Boulder opal Mined in Queensland, Australia 9.1mm x 16.7 mm x 2.6mm BIRTHSTONES & ANNIVERSARIES Opal is an October birthstone and the 14 year wedding anniversary stone. MINERAL: Hydrated Silica CHEMISTRY: SiO2•nH2O COLOR: All colors REFRACTIVE INDEX: 1.37-1.47 BIREFRINGENCE: None SPECIFIC GRAVITY: 2.15 (+0.08, -0.90) MOHS HARDNESS: 5 to 6.5 If you need additional information regarding any of our gems or stones please contact us at: [email protected] Show more