Chrysocolla Malachit gemstone cabochons natural gemstone 27cts 25*21mm
Chrysocolla is a gemstone quality hydrous copper silicate, often forming with copper salts, iron and manganese oxides. Chrysocolla is known to form in oxidation zones of copper ore bodies and is actually considered a minor ore for the mineral copper. 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 is especially prized for its attractive colors and unique multicolored patterns. The name 'chrysocolla' was derived from the Greek words 'chrysos' and 'kolla' which translate as 'gold' and 'glue'. It earned its name because it was often used as a gold soldering agent, but eventually, the term evolved into a generic name essentially referring to any green copper-bearing mineral.
Chrysocolla belongs to a very small group of copper-bearing gems which also includes malachite, azurite, Larimar, Oregon sunstone, Paraiba tourmaline and turquoise. Chrysocolla is most famous for its alluring, vivid blue to green cyan color, which is owed to the presence of copper impurities. Chrysocolla is often confused with turquoise and azurite, owing to their shared visual similarities of color and luster. Chrysocolla commonly forms with other copper-bearing minerals, which results in very interesting and unique mixes of different colors and mottled patterns. Some of the more common mineral mixtures include blue azurite (which chrysocolla often psuedomorphs with), green malachite and turquoise. Chrysocolla may also form with clear druzy layers of glossy quartz, essentially forming a natural doublet. In many cases, quartz crystal may actually be intergrown with the stone and not just as druzy layers. These quartz-hybrid mixtures are harder and much more durable than pure chrysocolla, often rendering them suitable enough for jewelry use.
Malachite is a green copper carbonate mineral. Its name could have come from the Greek word, "malache" which means "mallow", because the colour of malachite is similar to the colour of mallow leaf. Alternatively, the name could have originated in the Greek word, "malakos", which means "soft", due to the fact that malachite is soft compared with other minerals. Malachite is used as a source of copper and as a gemstone. It often occurs with azurite in copper deposits. Malachite often has distinctive concentric bands in varying shades of green, which make it an interesting gemstone. It typically occurs in aggregate form, as botryoidal (grape-shaped) masses. The history of malachite goes back to the ancient Egyptians, Greeks and Romans, who used malachite to make jewellery and amulets, and ground it into powder to make eyeshadow. Malachite has also been used as the pigment in green paints. Many years ago, huge blocks of malachite, some weighing an enormous 20 tonnes, were found in Russia and were used by the Tsars to decorate their palaces. However, the most significant contemporary source of malachite is Africa.
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