Beryllium Aluminium Cyclosilicate: Be3 Al2 Si6 O18 Mohs: 7.5-8 Source: USA, Brazil, Colombia, Zambia, Madagascar, Malawi, Tanzania and Kenya. Aquamarine is a beautiful blue Beryl. The name Beryl is derived from Greek βήρυλλος Beryllos which referred to a "precious blue-green colour-of-sea-water stone" The ancient Greeks and Romans believed that aquamarine would protect against any dangers while traveling at sea (they would carry small stones of Aquamarine to throw overboard in a storm as a sacrifice to Poseidon and Neptune to placate the storm), and that it provided energy and cured laziness. Aquamarine is a “Stone of Courage and Protection”. Used often with the Throat Chakra, Aquamarine can be used to promote verbal self-expression. It is often used to enhance spiritual communication and clear communication blocks. Aquamarine is also used to align all of the chakras and enhance the aura. It brings happiness, spiritual awareness and order, Good for eyes, teeth, glands and water retention.