Tanzania, Kenya, Madagascar, Cambodia, Sri Lanka, Burma, Thailand, Vietnam, Australia
India, China
Blue, Green, Yellow, Brown, White, Colorless, Blue, Red, Green, Yellow, pink, Yellow, Red, Brown, Green, Blue, Reddish, gray
Blue, Yellow, Brown, gray, Reddish, Greenish
Sagittarius, Virgo, Sagittarius, Virgo, Sagittarius, Virgo
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
(e.g. graphite).