Brazil, Color: bi-color, violet / yellow, Hardness: 7, Refractive index: 1.54 1.55, Density: 2.65 2.66, Chemical composition: SiO2, Crystal structure: hexagonal, Lustre: vitreous, Origins: Brazil, Bolivia, Uruguay. Ametrine is a bi-color variety of quartz, Yellow, Orange, India
Tanzania, Kenya, Madagascar, Cambodia, Sri Lanka, Burma, Thailand, Vietnam, Australia
Yellow
Blue, Green, Yellow, Brown, White, Colorless, Red, pink, Reddish, gray
Not Available
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)