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 Insane Plan to Tow an Iceberg to the Middle East We Found Gravitational Waves…AGAIN!!! Future of Screen Technology Why nuclear plants are shutting down Where Did Earth’s Water Really Come From? World's Scariest Job?