Financial Tribune- Gold options trading started on Iran Mercantile Exchange on Wednesday.  The options are being traded through brokers for the time being but, according to IME CEO Hamed Soltani-Nejad, their online trading will start when volume picks up.  The new options trading on the IME platform are offered on Emami gold coins–the benchmark for gold trading in Iran, SENA reported.  Their futures are already traded on IME while their spot trade is done in Tehran among bureaux de change overseen by the Central Bank of Iran. These options are European style, meaning they can only be exercised at expiration, contrary to American-style options that can be exercised any time from their sale up to the options’ expiration.