Lot 183, a frosted rock crystal and gem-set Cartier "Orange Tree" brooch dating from 1914, with three cabochon ruby "fruits", a buff-top calibré-cut citrine trunk and cabochon emerald foliage at its base (estimate: £15,000-£20,000)

Lot 183, a frosted rock crystal and gem-set Cartier "Orange Tree" brooch dating from 1914, with three cabochon ruby "fruits", a buff-top calibré-cut citrine trunk and cabochon emerald foliage at its base (estimate: £15,000-£20,000).