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 How Does the Internet Work? Egyptian Blue: How an Ancient Pigment Could Save Lives How batteries work Why We Still Don’t Have Electric Planes How Evolution Punishes The Selfish Can a Circle Be a Straight Line?