Osmium – The Rarest Naturally Occurring Element Osmium a very beautiful element that is in the Platinum group. It is the rarest naturally occurring element on earth. VSauce – What is the rarest precious metal? Facebook Prev Article Next Article Discover Checkout these cool gadgets... Related Posts The Science of Bees – Can a Bee Sting a Bee? Here’s how an Oscar is made Why Is Blue So Rare In Nature? What Happens at the Event Horizon? The Navy’s Indoor Ocean Can Humans Really Feel Hot and Cold?