18ct yellow gold diamond enamel house style large dragonfly brooch necklace m305 this collection has been created to celebrate house style and has been inspired by deborah the dowager duchess of devonshires own insect jewellery collection given to her by andrew the 11th duke deborahs famous insect collection included moths caterpillars spiders wasps dragonflies beetles bees butterflies and even a grasshopper she used to wear the brooches pinned to her shoulder along necklines o