(4)[ Nothing in this section shall apply to the acceptance, purchase or other receipt, by way of petty transactions, in the course of a day, of gold up to a quantity of one hundred grammes by a licensed dealer or refiner or certified goldsmith, as the case may be.]Explanation. - In this section, "petty transaction" means a transaction in which the total weight of any primary gold, article or ornament which is accepted, bought or otherwise received from the same person in the course of a day, does not exceed twenty-five grammes.]