Gold and enamelled Sirpech (turban ornament), detailed with emeralds, diamonds and pearls. Courtesy Royal Collection Trust © Her Majesty Queen Elizabeth II 2017
Gold and enamelled Sirpech (turban ornament), detailed with emeralds, diamonds and pearls. Courtesy Royal Collection Trust © Her Majesty Queen Elizabeth II 2017

Emeralds and rubies take limelight as diamonds lose sparkle for traders