Commodities MCX launches Bulldex, making it easier to track gold: Key things to know Updated : August 24, 2020 03:10 PM IST The weightage of gold in the index is 70.52 percent and that of silver is 29.48 percent. The lot size of the index is 50 lots. It means the profit and loss in Re 1 movement is Rs 50. Subscribe to Moneycontrol PRO at just Rs.33/- per month for the first year. Use code SUPERPRO. Limited period offer. Available on Web and Android.