Well, as crazy as it sounds, most people don’t actually know HOW much less Silver is worth than Gold. The difference in price is pretty big. For example, right now the price of gold per Oz. is $1,386 and the price of silver per Oz. is hovering around $20. Yeah, there is that much of a difference! A lot of people go into places that buy gold, silver and other metals and expect to be paid gold prices for their silver pieces and end up really surprised and upset with what they hear.
Other than the price difference, gold can also be different colors, but sterling silver pretty much has to stay one color.