Peridot from the variety of the mineral olivine. Origin of name either the Arabic word faridat meaning "gem" or the French word Peritot meaning "unclear". Peridot is one of the few gem stones that come in only one colour. The depth of green depends on how much iron is contained in the crystal structure. It is found in the USA, Myanmar, Egypt, China, Sri Lanka and Pakistan. 

Colour : Varies from yellow-green to olive to brownish green.
Hardness : 6.5-7 

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Peridot is a positive energy stone. It vibrates with the energy of sunshine, showering you with blessings and abundance. It helps bring the physical reality of your life into alignment with your true purpose and joy. It can help you release past hardships, and step into a new reality of fruitful goodness.