In its green form, however, it's beautiful enough to be considered a rare gemstone. These samples are rarely found outside of Kimberley, South Africa, but more common versions can be found in ...
There's a mineral so rare that only one specimen of it has ever been found in the entire world. It's called kyawthuite ( cha-too-ite ), a tiny, tawny-hued grain weighing just a third of a gram (1.61 ...
What is the 'new fact deep inside the Earth' that was trapped inside the ultra-rare diamond? - GIGAZINE Along with diamonds, peridot is one of the gemstones discovered at the deepest depths.