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An abandoned mine in Spain hides a sparkling treasure – the world's largest geode, a natural crystal phenomenon that has stunned scientists. In abandoned silver mine in Pulpí, in Spain's south-eastern ...

The main cause of our Instagram black hole trawling? Nail art. Enter your next nail obsession - geode nails. Forget galaxy nails (ok, they're still great, but these are better, trust), now we're all ...