Some do. I have a friend who is a jeweler. Almost all of the gems she buys, diamond or other, are either lab-made or recycled gems. But she is an exception to t

Some do. I have a friend who is a jeweler. Almost all of the gems she buys, diamond or other, are either lab-made or recycled gems. But she is an exception to the rule. She buys from a supplier that specializes in this sort of thing for small artistic custom jewelers.