Gold Rate in Oman per Gram 22k in (Muscat, Malabar, Salalah). Current price in Omani rial of 22K gold in Muscat (Asia) time (GMT+04:00). Gram in OM is a standard unit for measuring the precious metals. Gold bullion bars are also measured in gram e.g., 1, 5, 10, 20, 50, and 100 grams. While the 10-gram gold bullion bar is the most common.