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Learn about Gemstones Aquamarine Color: blue to bluish green Hardness: 7.5 Refractive Index: 1.57 – 1.59 Density: 2.67 – 2.75 Chemical Composition: Be3Al2(SiO3)6 Crystal Structure: hexagonal Origins: Brazil, Madagascar, Mozambique, Russia, India, Sri Lanka, China. Back

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