Opal Doublet Bow Brooch in 9ct Gold
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9ct gold opal doublet brooch, in the form of a bow, centring an oval opal doublet with a foliate and ribbon design surround, measuring 17 mm x 67 mm, 7.1 grams
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- Foliate - Decorated with leaves or leaf-like forms.
- 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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