Aquamarine

Color: blue to greenish blue  Hardness: 7.5 Refractive index: 1.57 - 1.59 Density: 2.67 - 2.75 Chemical composition: Be3Al2(SiO3)6 Crystal structure: hexagonal Origins: Brazil, Nigeria, Madagascar, Mozambique, Pakistan, Russia, India, Sri Lanka, China. Aquamarine is a light blue or light greenish-blue variety of beryl, with darker stones being more expensive. Heat enhancement is often applied to enhance the blue color of aquamarines, but only clean pieces can be heated. To invest in Aquamarine: www.gemsinvestors.com