Sotheby’s announced that the diamond necklace believed to be that of Catherine the Great's and housed in Russia’s Imperial diamond state fund from 1760-1917, will be the highlight of its Magnificent Jewels sale in Geneva on November 17. The necklace could sell for between $1.2 million and $2.0 million and it will be on view at Sotheby’s New York from October 28 to October 30.

The necklace consists of 27 large cushion-shaped diamonds within a border of stylized foliate motifs, close set with smaller similarly cut stones, embellished with a ribbon bow clasp, which can be worn separately.

Find out more about the diamond necklace that will be auctioned in Geneva on November 17.