Is it possible to take some silver/gold bar to india back from china...?

hi i came to china as a tour for 25 days when i go back to my country india is it possible to take some silver/gold bar to india back from china...? if so how much shall i take.... i have read the http://www.cbec.gov.in/travellers.htm document in that for import we have to stay abroad more than 30 days... i am very much confused... please any one clarrify my doubt