Expert's advice.... please!!!!?

I want to buy gold to secure my future......will it be sensible if i buy 1 gram every time i save a little money.....coz gold prices are hiking at a fast pace......by the time i ll be able to afford 10 grams....the prices will be hiked more.....my worry is....that jewelers deduct some money when u sell gold....so i dun wanna be in any loss....please suggest.... Thanks