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, Mexico, Tanzania, Brazil, Pakistan, Afghanistan. Axinite is a collectors stone that is rarely used in jewelry.
Not Available
Green, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey, Reddish, Brown, Yellow, Colorless, Blue, Violet, Grey
Colorless, White, Brownish, Reddish, Black, Brownish, Black, Colorless, gray, White, Reddish, Brown
(Ca,Fe,Mn,Mg) 3Al 2BSi 4O 15(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Na 3AlF 6Ulrich Henn and Claudio C.