Is sterling silver harder then a 10k gold?

No. Generally speaking alloys of gold or silver are harder than the more pure, higher carat gold or silver, as gold and silver are quite soft metals. Add copper or nickel and the hardnes goes up, so 10 carat gold or silver is harder than 92. read more

Generally speaking alloys of gold or silver are harder than the more pure, higher carat gold or silver, as gold and silver are quite soft metals. Add copper or nickel and the hardnes goes up, so 10 carat gold or silver is harder than 92.5% silver, which in turn is harder than 99.999% silver. read more

Since 10K gold contains less pure gold and more other metals, the resulting alloy ends up being harder than 14K gold. See: Selection of eye-clean diamonds vetted for quality Gold is a very soft metal, and the more of it is in a piece of jewelry, the softer the item is. read more