Thank you very much for your help.
I have one more question, is it cheap to carry gold to india, since gold prices are very high these days in India. Does anyone know about the prices And how much can you take with you ?

Answer
The gold price itself is the same internationally.
http://www.khaleejtimes.com/forex.asp

In Dubai you are just not paying any tax. Indian custom rules: http://www.immihelp.com/nri/india/travel/import.html

Is the gold prices keep going up as long as the interest rates stay low?

Answer
In theory, you are correct. Low interest rates and loose monetary policy inevitably lead to inflation (erosion of purchasing power), which drives up the price of gold. The current run up in gold has been the side effect of the devaluation of the US dollar in the forex markets (which has been artificially inflated over the years as the world's reserve currency) and fear.