Canada, Brazil, Madagascar, Mozambique, Russia, India, Pakistan, China, Sri Lanka, Color: yellow, green, pink or colorless, Hardness: 7.5, Refractive index: 1.57 1.59, Density: 2.67 2.75, Chemical composition: Be3Al2(SiO3)6, Crystal structure: hexagonal, Lustre: vitreous, Origins: Canada, Namibia, China. Among other varieties of beryl such as emerald, aquamarine or bixbite, beryl exists in different varieties such as: light yellow (heliodor), light green (vanadium beryl), light pink (morganite) or colorless (goshenite). Heat treatment could be applied to pink beryls to improve their color.
Ethiopia, Afghanistan, China, Australia, Color: light greenish blue, pale yellow or colorless. Hardness: 5.5 6, Refractive index: 1.58 1.61, Density: 3.04 3.11, Chemical composition: LiAl(PO4)F, Crystal structure: triclinic, Origins: Brazil (major source); also found in USA, Germany, France, UK, Finland, Norway, Sweden, Namibia, Zaire, China and Australia., Axinite is a collectors stone that is rarely used in jewelry.
Green, Blue, Yellow, Colorless, pink
Brown, Green, White, Colorless, Yellow, Blue, gray, pink, Greenish
Uneven, Conchoidal, Irregular, Gems, Brittle
Sub-Conchoidal, Irregular/uneven, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
Be3Al2Si6O18
(Li,Na)Al(PO 4)(F,OH)Michael OâDonoghue , Gems, Sixth edition (2006) More from other references