Opal Doublet Bar Brooch on 9ct Gold

A bar brooch, featuring an opal doublet in blue and red tones,…
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A bar brooch, featuring an opal doublet in blue and red tones, on 9ct yellow gold, with metal pin. Not stamped. Weight 3.2g.

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  • Doublet and Triplet - A doublet and a triplet are both composite imitation stones, consisting of two or three joined layers. A triplet is made with the crown and base of genuine material, but with a centre layer, usually of glass, the object being to make the stone appear larger than it really is. A doublet consists of only two layers.

    Opal doublets are quite common and consist of a thin layer of opal cemented to an opal matrix or black glass.

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