Peridot
Peridot
  Peridot has always been associated with light. In fact, the Egyptians called it the âgem of the sun.â Some believed that it protected its owner from âterrors of the night,â especially when it was set in gold. Others strung the gems on donkey hair and tied them around their left arms to ward off evil spirits.
The word peridot comes from the Arabic âfaridat,â which means âgem.â Most peridot formed deep inside the earth and was delivered to the surface by volcanoes. Some also came to earth in meteorites, but this extraterrestrial peridot is extremely rare, and not likely to be seen in a retail jewelry store.
Early records indicate that the ancient Egyptians mined a beautiful green gem on an island in the Red Sea called Topazios, now known as St. Johnâs Island or Zabargad. Legend has it that the island was infested with snakes, making mining unpleasant until an enterprising pharaoh drove them into the sea. From the earliest times, people confused this stoneânow known to be peridotâwith other gems. It was one of many labeled as âtopaz.â
Some historians believe that Cleopatraâs famous emerald collection might actually have been peridot. People in medieval times continued to confuse peridot with emerald. For centuries, people believed the fabulous 200-ct. gems adorning the shrine of the Three Holy Kings in Germanyâs Cologne Cathedral were emeralds. They are, in fact, peridots.