The sparkle is fading fast from silver ETFs. After an electrifying rally that sent domestic silver prices to record highs, the white metal’s sheen has dulled. Silver ETFs have plunged nearly 19% from their October 15 peak as premiums over international prices evaporated. When markets reopen on Thursday evening after the Diwali break, investors may face another round of sell-offs, with global silver prices already tumbling 7.1% on Tuesday amid a stronger dollar and risk aversion across commodities.