Million Dollar Rarest Natural Black Diamond known as ""shaan-e-kolkata"" with a weight of 121.32 carats (24.264g)good round-cut presently in India.It's certified by Golconda Institute of Diamonds, Hyderabad on 25th May 2012, an issued Certification of Authenticity "by Mr. Imran Shareef (Certified Diamond Grader GIA New York, USA)."﻿ Currently owner Prem Singh from West Bengal,India