This is evident when you look at the average retail prices of diamonds by carat weight. On average, the retail price for one carat diamonds can be anywhere between $2,000 to $16,000, and between $8,000 to $72,000 for two carat diamonds .

How to tell if a diamond is real with a loupe - Quora. Natural, real diamonds, except for extremely rare, extremely expensive internally flawless diamonds, will have visible flaws under a loupe. Black carbon spots, feathers, inclusions, extra facets, tiny internal crystals.

Moissanite: Brilliance and Fire Moissanite has unparalleled sparkle! It has a higher refractive index than diamond, resulting in greater brilliance than diamond. Moissanite also has greater dispersion (fire) than a diamond, so you will notice more rainbow flashes of light.

The Water Test Drop the gem into a glass of water. While a fake diamond is often hollow inside, a real diamond is high in density. Therefore, if the suspect stone sinks straight to the bottom of the glass, it is a real diamond. A fake stone will float around the top or middle of the glass.