Where can scrap gold be sold at the highest selling rate?

Honestly it would depend on the form in which the gold is. For example if what is being sold is gold jewelry it would be best to take the item to a jeweler as not only the cost of goal will be taken into consideration, but the craftsmanship as well. If in the form of coins there are bullion coins as well as numismatic coins which would be worth more to collectors who once again take more into consideration than simply the cost of gold at the time. So when selling gold it would be best to first know not only what it is but also if sentimental worth may add to its value.