An unmounted coloured diamond of 118.05 carats is displayed, at Christie's auction rooms in London, April 9, 2019. The diamond estimated at 2,500,000-3,500,000 US dollars will be sold at the Geneva Magnificent Jewels auction on May 15. (Photo/IC)
A model wears a rare aquamarine and diamond tiara by Faberge, at Christie's auction rooms in London, Tuesday, April 9, 2019. The tiara estimated at 230,000-340,000 US dollars will be sold at the Geneva Magnificent Jewels auction on May 15. (Photo/IC)
A model wears a 19th century emerald and diamond fringe necklace, during a media opportunity at Christie's auction rooms in London, Tuesday, April 9, 2019. The necklace estimated at 1,500,000-2,500,000 US dollars will be sold at the Geneva Magnificent Jewels auction on May 15. (Photo/IC)
A model displays a natural pearl sautoir with one hundred and ten natural pearls, at Christie's auction rooms in London, Tuesday, April 9, 2019. The necklace estimated at 2,500,000-3,500,000 US dollars will be sold at the Geneva Magnificent Jewels auction on May 15. (Photo/IC)