The best place to sell your gold, bullion or coins, is the place that is willing to educate you the most. Selling your gold jewelry takes some research to make sure you get the absolute most for your gold.
Selling silver or gold coins can be much more complicated than when you sell gold jewelry. Silver and gold coins can hold a numismatic value that greatly increases the value of your gold or silver coins above the actual value of the metal. There are several coin grading companies that can provide you with numismatic values.
At the end of the day, you want to get the most for gold or silver, and the best place to sell gold, is the place that will give you the most. Please be aware that there are many ways that people can be shorted 40-60% on the value of their gold or silver, please educate yourself and get the most for your gold and silver.