Brazil
Tanzania, Kenya, Madagascar, Cambodia, Sri Lanka, Burma, Thailand, Vietnam, Australia
Black, Colorless, Green, Violet, White, Yellow, White, Colorless, Blue, Red, Green, Yellow, pink, Brown, Colorless, Violet, gray, Yellow
Blue, Green, Yellow, Brown, White, Colorless, Blue, Red, Green, Yellow, pink, Yellow, Red, Brown, Green, Blue, Reddish, gray
Taurus, Capricorn, Sagittarius, Capricorn, Sagittarius
Sagittarius, Virgo, Sagittarius, Virgo, Sagittarius, Virgo
Conchoidal, Conchoidal, Brittle, Gems
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)