If you've ever wanted to buy a new ring, necklace or pair of earrings but aren't sure whether to pick between gold, silver, emerald or ruby - one optical illusion may be able to help.

Many of these puzzles are a great way to stay entertained or give your brain a mental workout, but others can help you learn more about yourself. It may sound odd, but the latest claims to tell you what jewellery suits you best with one look.

At first glance, the image appears to show three circles against a dark background that becomes lighter, but the longer it's looked at, the more that is revealed. The orbs appear to some as different colours, but they are in fact the same shade.

This optical illusion, published by F Hinds Jewellers, makes it look like the gold circles are all different shades. However, it is in fact our brain changing the colour of the circles when they are compared against different colours and lighting backgrounds, as the circle remains the same throughout.

Optical illusion
What colours do you see?

Can’t believe it? It can be confusing, but the below static image reveals that the gold circles are in fact the same shade when shown against a white background. The colour saturation showcases how the same shade of gold can look entirely different on varying backdrops. In turn, the same can be applied to knowing what colour jewellery you will prefer depending on your skin tone.

People with warmer golden based skin tone are better suited to gold jewellery with shades in the hotter end of the colour spectrum like ruby, amber and citrine. For cooler skin tones, maybe opt for silver jewellery like sapphire blues and emerald green gems.

Your brain can be easily fooled by the way it judges brightness and colour by comparison. When buying jewellery for yourself or a loved one, it's important bear this colour rule in mind, based on their preferences.

If you're eager for more mind-bending puzzles, one puzzle can help tell if you're an introvert or a social butterfly. To boost your cognitive skills, this optical illusion requires "crystal clear" focus to spot the horse with no tail.

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