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Chrysocolla is most famous for its alluring, vivid blue to green cyan color, which is owed to the presence of copper impurities. Although chrysocolla may be a 'lesser known' gemstone, it is still a very fascinating stone that is highly sought-after by many avid gem and mineral enthusiasts. Chrysocolla can often be distinguished by its hardness, unique color and interesting patterns. However, depending on its exact composition, its hardness can range significantly, but in most cases, distinguishing chrysocolla can typically be done through scratch testing.Chrysocolla is almost always opaque, although some rare materials may occur slightly or almost translucent. When cut and polished, chrysocolla has an attractive greasy to vitreous luster.