Victorian gold and silver turquoise enamel seed pearl brooch

Victorian gold and silver turquoise enamel seed pearl brooch, with cannetille decoration and glazed locket verso

Condition Report:
Approx 12.6gm (excluding glazed back), the central turquoise and seed pearl set in silver, the gold mount tested 20ct (probably slightly lower carat gold overlaid on higher carat gold), back pin not gold, dimensions = 35mm x 40mm, some discolouration and wear to smaller seed pearls, appearing dull, enamel in good condition