A fine gold and turquoise parure, France, circa 1830

A fine gold and turquoise parure, France, circa 1830, of seashell motif in gold cannetille, accented with turquoise cabochons, comprising: a tiara with gilt metal hair comb fitting, inner curve 18cm; a necklace, length 39cm; a bracelet, length 16.5cm; a pair of earrings, length 4.7cm each, hook and clip fittings; and a buckle/slide, length 4cm, earrings, buckle/slide, tiara and earrings with French regional petite guarantie assay marks for Mézières, Ardennes, 1819-1838, combined gross weight excluding hair comb 131 grams, tiara with break to central motif