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Aquamarine(from Latin: aqua marina, "water of the sea") is a blue or turquoise variety of beryl. The pale blue color of aquamarine is attributed to Fe2+. The Fe3+ ions produce golden-yellow color, and when both Fe2+ and Fe3+ are present, the color is a darker blue as in maxixe. (source: Wikipedia) The above photo shows a black Schorl tourmaline crystal with a twin aquamarine crystal from the Haramosh Mountains in Pakistan Return to List Back to Michael's Hobbies page Back to Michael Marcotte's HomePage