Gold tumbled 465 rupees, to 30,785 rupees per ten grams at Delhi's bullion market, today, on reduced offtake by stockists at existing higher levels, amid a weak global trend. Silver remained under selling pressure for the fourth straight day, losing 200 rupees, to 43,600 rupees per kilo. Silver had dropped 1,275 rupees in the previous three sessions. Silver coins remained unchanged at 82,000 rupees for buying 100 pieces.