Diamonds (and jewelry in general) are a girl's BFF. But are we any good at telling real diamonds from fakes? The technology used to make simulated diamonds, gemstones, and gold has improved drastically in the last few years. Fake diamonds no longer look like rhinestones, so now a fashionista can look as if she were born with a loupe in her hand, even if she wasn't. Take our quiz after the jump and see how many fakes you can spot. The answers are in the last slide.