crystal
| The rarest mineral found on earth is kyawthuite. Only one crystal of this mineral has ever been found in a region of Myanmar called Mogok. The crystal is a reddish-orange color, weighs 1.61 carats, or about 0.3 grams. |
| The rarest mineral found on earth is kyawthuite. Only one crystal of this mineral has ever been found in a region of Myanmar called Mogok. The crystal is a reddish-orange color, weighs 1.61 carats, or about 0.3 grams. |