This Tiny One-of-a-Kind Gem Is the World’s Rarest Mineral
Kyawthuite is a transparent reddish-orange mineral of which only a single, tiny sample exists – an 0.3-gram gem – making it the rarest mineral in the world, by far. There are around 6,000 minerals recognized by the International Mineralogical Association, and while many of them are classified as ‘rare’, none of them rival kyawthuite in […]