India-based VD Global discovered the 0.329-carat, D-color, type IaAB diamond, named the Beating Heart, in October, and returned it to De Beers for testing, the miner said last week. The stone originated from one of De Beers’ mines in Botswana, Canada, Namibia or South Africa. The miner sent the stone to the De Beers Institute of Diamonds, which performed a preliminary analysis, as well as optical and scanning electron microscopy (SEM), infrared spectroscopy and fluorescence,