Ruby-Like Crystals Found in Martian Rocks

The Mars rover Perseverance has discovered corundum crystals on the rim of the Jezero Crater - a mineral from which precious stones are formed on Earth.

Ruby-Like Crystals Found in Martian Rocks

Chrome inclusions, typical of rubies, were found in three samples.

The Martian "precious stone" may have formed during impacts by large meteorites.