15.5 ct Boulder Opal set in Sterling Silver Pendant

227668770 from Graeme Blaiklock on Vimeo.

Boulder Opal is an absolutely magnificent gemstone. Arguably the rarest of all Opal gems Boulder Opal is a diminishing resource (which means it is genuinely running out). Each Opal is unique, each gemstone is hand-carved from 'veins' of Opal colour that ebb and flow through the heart of the ironstone. Boulder Opal pendants are designed around the incredible beauty that occurs within the free-flowing surface of the Opal with the Gemstones natural 'Ironstone' often appearing on the surface (which adds character and individuality) Boulder Opal Pendants are an absolutely unique gift. Individual, creative, expressive they reflect the absolute miracle that is natural Opal Formation Technical Specifications Genuine Natural Australian Boulder Opal consists of a hydrated amorphous form of concretions of SiO2•nH2O silica consisting of spheres of silicon dioxide molecules arranged in regular, closely packed planes filling the cracks and crevices of Boulder Opal ironstone found remotely in Queensland Australia. Boulder Opal is a diminishing resource with anecdotal evidence suggesting increases in value of up to 15% per annum. Guaranteed free of dyes and artificial colour. With one of the most environmentally friendly mining methods on earth Boulder Opal is a truly sustainable gemstone and, as a correspondingly diminishing resource a sound investment!