Jade is a jadeite based fibrous, dense block sodium aluminosilicate mineral aggregates, the chemical formula NaAl (Si 2 O 6). Jadeite is one of the rarest species in the pyroxene family, one of the most common rock-forming minerals in nature. It belongs to the monoclinic system. The crystal form is a short columnar, fibrous microcrystalline aggregate. The color of jade is ever-changing, mostly green, red, purple, blue, yellow, gray, black, colorless and so on. According to the color, brightness and saturation of green, jade can be divided into six types: emerald green, apple green, green onion, spinach green, oil green, gray green. Glass luster to grease luster, translucent to opaque. The refractive index is 1.66-1.68, the birefringence is 0.012-0.020, and there is no pleochroism. The hardness is 6.5-7 and the density is 3.25-3.4g/cm3. Extremely tough. Since ancient times, jade has been one of the most popular jewelry. The green and red of the emerald symbolizes happiness and prosperity. People wear jade ornaments, you can prevent self-defeating, and you will be ill-fated. Giving and wearing jade ornaments, heralds the loyalty to love. High-quality jade is an expensive gemstone in the world today, and it is a high-grade jade.
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Jade's chemical knowledge
The English name of Jadeite is Jadeite, short for Spanish Picdo de jade, meaning a gem worn on the waist. The reason why it is called jade is because its color is not uniform. Sometimes it is accompanied by red and green chromophores on a light foundation. The beauty of color is like the ancient red feather feathers and green feathers, so it is called Emerald. In modern times, people call the jade a "red, green and green".