Blue
Yellow, Brown, White, orange
Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn, Leo, Gemini, Capricorn
Not Available
Not Available
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
Not Available
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)