Some people will tell you this never happens. I’m here to tell you it does happen because it happened to me, and at a jeweler I trusted and everyone in the area told me could be trusted.
The diamond switch can be done very fast by someone with a lot of practice. Don’t believe anyone who tells you a minute or two “isn’t enough time.”
What happens is you take your diamond for cleaning or to have the prongs adjusted – or something. Maybe you browse the showcases while it’s being done. …

Buying a diamond (or any precious gem) doesn’t have to be an overwhelming experience. Probably the most basic thing to know is what is known as “the 4 C’s” – cut, color, clarity and carat.
Cut
The brilliance of a diamond depends heavily on the cut. The cut refers to the diamonds refractory qualities (or what makes a diamond sparkle), not the shape of the diamond (round, emerald, princess, etc.) The quality of the cut makes a big difference in how a diamond looks. A good cut gives the diamond its brilliance, …