Peridot
Peridot is a well-known and ancient gemstone, with jewelry pieces dating all the way back to the Pharaohs in Egypt. The gem variety of the mineral Olivine, it makes a lovely light green to olive-green gemstone.
The intensity of color depends on the amount of iron present in a Peridot's chemical structure; the more iron it contains the deeper green it will be.
The most desirable color of Peridot is deep olive-green with a slight yellowish tint. Deeper olive-green tones tend to be more valuable than lighter colored greens and yellowish-greens
Chemical Formula: (Mg,Fe)2SiO4
Color: Green, Yellow
Hardness: 6.5 - 7
Crystal: System Orthorhombic
Refractive Index: 2.63 - 2.65
SG: 1.54 - 1.55
Transparency: Transparent
Double Refraction: 0.009
Luster: Vitreous
Cleavage: 2,1 ; 3,1
Mineral Class: Olivine
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