RAPAPORT... BlueRock Diamonds’ average price jumped sharply at its March rough tender — a trend the miner put down at least in part to the Russia crisis.The company garnered $1,000 per carat at the sale, up from a 2021 average of approximately $465 per carat, it said Tuesday. The figure was also higher than the $600 per carat it brought in during the strong period of demand in January and Feb...