MOSCOW, RUSSIA - OCTOBER 20, 2016: Gem set and diamond necklace on display at a Sotheby's pre-auction exhibition. Artyom Geodakyan/TASS (Photo by Artyom Geodakyan\TASS via Getty Images)
MOSCOW, RUSSIA - OCTOBER 20, 2016: Gem set and diamond necklace on display at a Sotheby's pre-auction exhibition. Artyom Geodakyan/TASS (Photo by Artyom Geodakyan\TASS via Getty Images)