Lalique ‘four dragonflies’ brooch, €230,000 at Peschetau Badin.

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The brooch dates from c.1900, the period when Lalique was making Art Nouveau taste jewellery before he moved on to large-scale manufacture of glasswares.

The brooch, signed on the edge of one wing, uses the signature techniques employed by Lalique at the time, most notably plique à jour (translucent enamelwork) to create the effect of the insects’ iridescent wings.

The brooch is also set with diamonds and has a large cushion-shaped aquamarine to the centre. It sold within its €200,000-300,000 estimate at €230,000.