Zimbabwe’s second-largest diamond miner sees demand picking up, after the coronavirus pandemic forced RioZim to halt sales in March amid slumping gem prices. With jewelry stores closed, cutters and polishers stuck at home and global travel at a standstill, the diamond industry ground to a halt over the past six months. While De Beers, the No. 1 producer, decided to cut the price of its diamonds this week in a bid to spark sales, RioZim said consumer demand for polished stones is already recovering.