Gold plunged 835 rupees, to 26,440 rupees per ten grams at Delhi's bullion market, today. Silver tumble 2,500 rupees, to 50,800 rupees per kilo and silver coins plunged 7,000 rupees, to 58,000 rupees per 100 pieces.In London, gold shed 56 dollars, to 1,608 dollars an ounce, as investors sold the precious metal to cover losses in other assets. Silver lost 3.2 per cent, to 29.11 dollars an ounce.