This area is for general questions about antiques, precious metals, jewelry, and related topics. Have you ever wondered what the four Cs of a diamond are or what the karat system for gold means? What about how the prices of precious metals are set? If you have, you’ve come to the right place. Take a look below for answers from the experts. If your question is not addressed below or on the FAQ page, please feel free to submit your question through the contact page.