 
Aquamarine, a member of the beryl family, gets its name from two Latin words which mean "sea" and "water." This lovely blue gem has been popular since 400 B.C. Ancient Greeks believed aquamarine held the essence and spirit of the sea. Wearing this stone was said to protect one from adversities at sea, prevent sea sickness, and provide courage and a strong will. To Christians, aquamarine symbolizes harmony, happiness, childhood innocence, youthfulness, and purity. Mohs hardness: 7.5-8 Refractive Index: 1.577-1.583 Specific Gravity: 2.68-2.90 The toughness of aquamarines is fair. Aquamarine may be cleaned by using jewelry cleaners, mild soap, or an untreated cloth. However, steaming, ultrasonic, and boiling aquamarine is not recommended! Fine colored aquamarines are a bluish gray. More common aquamarines are a pale blue color. Most aquamarines are heat treated to enhance coloring.
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