India, Feb. 6 -- Forget gold prices, although they are important in this story. Forget buying gold, but that too is crucial. Remember selling gold, especially old gold that is lying with Indian households for years, decades, even a century or more. Over the past two years, and particularly in the past few months, Indians have begun to dust old gold, lying at home or in bank vaults, shining them up, and either selling it, or pawning it for loans. According to Experian India, as unsecured borrowing becomes expensive, as personal loans and credit become costlier, gold loans have made, and are making, a comeback, and with a vengeance. Today, gold is more of a "practical financial safety valve," and gold loans are among the "fastest-growing se...