How to tell if your partner gifts you a fake diamond this Valentine's Day

Experts have revealed the simple test you can do to see if your diamonds are real or fake - and it's super handy when it comes to purchasing an expensive gem too.

All you'll need is a piece of paper and a pen, and you'll simply need to draw a line, before placing the stone on top of it.

If you can see the line through the diamond, it's bad news, but if the line disappears, you've bagged yourself a quality jewel.

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