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Can you spot a laboratory-made diamond?

21 October 2015 Last updated at 18:00 BST

If you’re lucky enough to give or receive a piece of diamond jewellery – do you think you’d know what you’re looking at?

There’s a debate raging about whether diamonds created in a laboratory will start to threaten the popularity of natural, mined diamonds.

The BBC’s Sharanjit Leyl paid a visit to the world’s largest firm making lab grown diamonds in Singapore.