Stone of the month

MAY

( Emerald)

Emeralds are a rare variety of the mineral beryl, colored green by trace amounts of chromium and vanadium. They are up to 20 times rarer than diamonds. First mined in Egypt around 1500 BC, they are the traditional May birthstone and rank 7.5 to 8 on the Mohs scale of hardness. Deep, vivid green emeralds are the most highly prized and command a premium, whereas lighter-hued stones are less valuable. Unlike diamonds, flawless emeralds are virtually nonexistent. Internal inclusions (known as the jardin or garden) are expected and, if arranged in a beautiful, unique pattern, can actually increase the gem's value. Colombia is the world's leading emerald producer, supplying 50% to 90% of global emeralds, followed by Brazil and Zambia. Ancient Egyptians buried mummies with emeralds to symbolize eternal youth and rebirth. They were a favorite of Cleopatra, who was known to wear them extensively. Ancient cultures believed placing an emerald under your tongue could help you predict the future and determine the truth of a lover's words.