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Gemstones

Gemstones. Types of gemstones. Some gemstones represent the zodiac signs. How gemstones are formed?. Gem stones are really interesting .there formed in the earths mantle but it rises up to the surface and you get it from the crust ; Peridot and

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Gemstones

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  1. Gemstones

  2. Types of gemstones Some gemstones represent the zodiac signs

  3. How gemstones are formed? Gem stones are really interesting .there formed in the earths mantle but it rises up to the surface and you get it from the crust ;Peridotand Diamond are formed from the earth’s mantle. Firstly , the solidification of magma then the magma from the mantle can rise to the crust, usually through volcanic pipes. If it reaches the surface of the earth, it turns to lava. But if the magmatic mass cools slowly in the crust, it can crystallize and form minerals(gemstones). Increases in pressure can also cause this pegmatite fluid to infiltrate surrounding rocks, often making chemical exchanges with them.Once the igneous rock reaches the surface of the earth, the forces of erosion and weathering produce smaller particles which accumulate on the surface or are moved by wind and water. As time passes, layers of these sediments build up on land or under water. The pressure from upper layers causes compaction in the lower layers along with various chemical and physical changes such as lithification , which lead to the creation of sedimentary rock. Evaporation is an another part which also produces sedimentary rocks, as when dripping mineral-laden waters leave behind stalactites or stalagmites.

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