Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma, Color: blue, Not Available, Not Available, Not Available, Hardness: 8.5, Refractive index: 1.74 1.77, Density: 3.68 3.80, Chemical composition: BeAl2O3, Crystal structure: orthorhombic, Origins: Brazil, Madagascar, Zimbabwe, Russia, Sri Lanka, India, Burma. Bluish stones are most valuable. Prices for chrysoberyls grow rapidly with weight, and clean stones bigger than 15 cts are rare and therefore an excellent investment.
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, Bolivia, Brazil, India, Yellow, Orange, Bolivia, Brazil, India
Greenish, Green, Brownish, Green, Red, Blue, Green, Brown, Brownish, Green, gray, Blue, Green, Brown, Brownish, Green, gray
Yellow
Not Available
Scorpio, Libra, Virgo, Scorpio, Libra, Virgo, Scorpio
Uneven, Conchoidal to uneven, Brittle, Metallic, Uneven, ConchoidalWalter Schumann, Brittle, Metallic
Not Available