Found in lava, meteorites, and deep in the earth’s mantle, yellow-green peridot is the extreme gem
Yellow-green gem variety of the mineral olivine. Found as nodules in volcanic rock, occasionally as crystals lining veins in mountains of Myanmar and Pakistan, and occasionally inside meteorites.
A ruby is a pink to blood-red colored gemstone, a variety of the mineral corundum
Rubies have always been held in high esteem in Asian countries. They were used to ornament armor of noblemen in India and China.