Emerald a highly prized and always flawed natural precious stone. In fact an Emerald found to have no flaws much instantly be suspected of being either a fake or synthetic. Emerald jewelry has long been a favorite of royalty as the stone's deep color seems to indicate power. It ranges in color from light to dark green. The shade of green is determined by the presence of chromium oxide and vanadium.
The word Emerald comes from the Persian word for green stone. Emeralds mined during ancient times came almost exclusively from Egypt.
Never use an ultrasonic or steam cleaner to clean your Emerald jewelry. These may cause damage to the stone or the setting.