Synthetic gemstones are distinct from imitation or simulated gems. The Crystal Gems and Diamonds travel back to Earth. Peridot is sometimes mistaken for emeralds and other green gems. Minerals included gold, gems and iron ore. The Poetic Edda states that he forged beautiful gold rings set with wonderful gems. The Maya also traded in precious gems. Red spinels may be mistaken for rubies by those lacking experience with gems. There are over 10,000 Ruby gems hosted on RubyGems.org. Wealthy Albanian women wore headdresses embellished with gems, gold or silver. The hilts may be covered in enamel, gems, or gold foil. Engraved gems are small carved gems, including cameos, originally used as seal rings. False eyelashes, plastic facial gems, and pearl powder are often added to this. Despite its low hardness relative to other gems, turquoise takes a good polish. Shortly afterwards, all four main Crystal Gems fuse to form Obsidian. The Pancharatnas are known as the five finest gems of Carnatic music.