In Impermanence, Boucheron transforms high jewellery into a meditation on time, preserving what is destined to fade.

Louis Vuitton updates Idylle Blossom with six gold-and-diamond pieces, streamlining its Monogram Flower into modern, stackable essentials.

Chanel unveils 'Reach for the Stars' high jewellery collection, focused on three elements beloved of Gabrielle Chanel: comets, wings and lions.

Look beyond diamonds: Sophia Hirsh of Hirsh London gives expert advice on investing in colour gemstones and reveals some lesser known winners.