Emerald is the name given the green variety of beryl and ranges between 7.5 and 8 on the scale. Top quality emeralds are a deep grass green with a slightly bluish cast, but many lesser quality stones are lighter shades of green and can have a more yellowish tone.

Because emeralds usually contain many cracks, fissures, and inclusions, the majority of these stones are "oiled". This means that they are
immersed in oil which reduces the visibility of the inclusions, and also improves the clarity.

Emeralds are brittle stones and care should be taken
when wearing or cleaning them.

It is a green mineral called Beryl and formed in metamorphic rocks. Emeralds are mined using underground mining and surface open pit mining.

Emeralds were used as amulets to ward off epilepsy in children and thought to cure diseases of the eye. Folklore suggests that these stones will improve memory, intelligence, and enhance clairvoyance thus helping to predict future events. They are also worn to enhance love and contentment.