USA, Mexico, Tanzania, Brazil, Pakistan, Afghanistan, Color: colorless, Not Available, brown, blue bluish, Hardness: 6.5 7, Refractive index: 1.673 1.693, Density: 3.26 3.36, Chemical composition: Ca2(Fe, Mn)Al2BSi4O15(OH), Crystal structure: triclinic, Origins: USA, Afghanistan. Axinite is a collectors stone that is rarely used in jewelry.
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.
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Green, Blue, Yellow, Colorless, pink
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009)
Uneven, Conchoidal, Irregular, Gems, Brittle
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Be3Al2Si6O18