Is your Valentine's Day diamond a FAKE? Expert reveals a simple trick to prove your engagement ring is the real deal with a sheet of white paper and a pen

[Erotobot]

It's one of the most popular days of the year to propose and all across the country, many are hoping that a little box containing a sparkling diamond is awaiting them on Valentine's Day.

But whether you're in the market for purchasing an engagement ring, or the lucky recipient, how can you tell if an expensive sparkler is the real deal?

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