A diamond necklace by Mumbai-based diamantaire Nirav Modi, will be auctioned by Sotheby’s at a reserve price of Rs 50 crore in Hong Kong on April 7.

Exquisitely mounted in platinum, the ‘Spectacular Diamond Necklace’ has 17 Type IIa diamonds, with D-IF colour clarity. The central pendant of the necklace weighs in at an impressive 10.51 carats.