I want to take a loan against gold. What kind of benefits will I get under it?

You need your head examined to offer gold as collateral for a loan. The bank will sell the gold and still charge you to store it. When it comes time to give it back to you, whoops, my goodness we'll need a few days. That is because they have to go buy some to give you. If the bank folds, you still have to repay the loan but nobody has to give you back your gold. And you can't even sue them for fraud.

Hide your precious metals at home and don't even think about trusting anybody to hold them for you. When you have PMs you have already won the rat race.