A sapphire and diamond ring sold for more than 21 times its upper estimate at Sotheby's Geneva Fine Jewellery sale. | Source: Rapaport/Sotheby's

A pair of earrings featuring two step-cut, 5.01-carat, E-color, VS2-clarity diamonds topped by lines of brilliant-cut diamonds.

A necklace composed of a row of 55 graduated step-cut diamonds, weighing a total of 61.72 carats.

This Schreiner parure comprises a necklace designed as a graduated series of flowers, with tapered baguette and brilliant-cut diamonds; a crossover bangle; and a pair of earrings.

This bracelet has a line of oval and cushion-shaped Burmese rubies, between clusters of marquise-shaped and brilliant-cut diamonds.