Black jade is a rare variety of jade. It is gradually being loved by more and more people because of its dual colors. Its solemn and mysterious temperament makes it one of the first choices for many people. The market share of black jadeite is very low, but it is famous all over the world for its unique color characteristics. There are many standards for measuring the quality of black jadeite. Good quality ones are priceless, while poor quality ones are just street goods. As a special type of jade, black jadeite has won people's popularity and popularity with its unique characteristics. How can we identify the quality of black jadeite? Several characteristics that can be observed by the naked eye are: look at the color, which is dark green or pitch black when observed through reflected light; look at the transparency and structure, the particles are arranged tightly, the quality is good, and the transparency is high; look at the appearance of the color, it is evenly black and shiny black; look at the composition, sodium aluminum silicate is a component of black jadeite, which can completely transmit light, while black jade is not completely transmittance. Because the main mineral component of black jadeite is omphacite, it contains a small amount of minerals such as albite and tremolite. It has a fine structure and is less brittle. Its deep color is caused by excess Cr and Fe. This type of jadeite appears as a deep dark green or dark green under strong light. It has a density slightly higher than ordinary jadeite, a refractive index between 1.67-1.688, and a very strong luster. Wearing black jadeite makes the owner look more noble, elegant, fashionable and stylish. In addition, since black jade is natural jade, the product is rare and becomes more precious, making it the perfect choice for collection.
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