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Malachite is an ancient jade material whose main component is basic copper carbonate. The English name for malachite is Malachite, which is derived from the Greek Mallache, meaning "green." In ancient China, malachite was called "green green", "stone green" or "green". Malachite has such a beautiful name because it resembles the spotted green color of peacock feathers. The oxidized zone of sulphide deposits produced by malachite in copper is often symbiotic with other copper-bearing minerals (blue copper, chalcopyrite, cuprite, natural copper, etc.). Grade A: The color is darker, green, dark green and sky blue. The strips and concentric rings are visible, the structure is dense, the texture is fine, and the hardness and relative density are large. Grade B: The color is light and green, and the ring and strip patterns are composed of white and emerald green. The white and white texture is soft and grooved. The overall hardness is relatively high and varies. Dexter Collection Encyclopedia - Synthetic Malachite: As shown in Figure 3, the top is made of artificial malachite, the texture is rigid, and the touch is not cold.