Gold emerald Chrysoberyl is very expensive and extremely rare. It is a relatively complicated money aluminum oxide, the molecular formula is BeAl, O, hardness 85, specific gravity 8. Translucent to transparent. Its biggest feature is the color change effect, which is green or yellow-green,Burmese jade blue-green, gray-green, yellow, brown in sunlight; it turns purple-red and red under the light. Place Gold emeralds are also called discolored gemstones. On the basis of discoloration, gold emerald has a more precious cat's eye effect, and the narrow and flexible swimming beam is very vivid. This cat's eye effect appears mostly on the golden base, just like a real cat's eye. It is very precious. Compared with jade, the green component of gold emerald is mainly iron, followed by chromium, which are all ingredients. Impurities contained in the material; Cui Cui is chromium and aluminum enters the crystal lattice to produce green. Gold emerald is glass luster, emerald is also glass luster, but the brightness is not as good as gold emerald. Its dispersion is 0.015, while jade has no dispersion properties. Both resilience are good. Gold emeralds are ring-shaped, radial and granular crystals. The specific gravity and hardness are different from  jade pendants. The color is characterized by the yellow-green color of the emerald and the emerald green. The color source of gold emerald has no layer, and the color source of jade has a clear color. The country that produces gold emeralds is Sri Lanka, which mainly produces golden green cat eyes; Brazil produces stars in the sun. Greenish yellow, similar to cassava, the gold emerald produced by Madagascar is brownish yellow green in the sun. Produced in Myanmar is dark green in the sun; Russian is blue-green in the sun.