Peridot and Rock Crystal Optical Properties

Peridot

Rock Crystal

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1 Optical Properties

1.1 Luster

Vitreous, Greasy

Not Available

1.2 Pleochroism

Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli

AbsentWalter Schumann

1.3 Dispersion

0.020.01

0.007 1

1.4 Transparency

Transparent

TransparentWalter Schumann, Gemstones of the world (2001) More from other references

1.5 Refractive Index

1.64-1.691.544-1.553

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.0360.009

0 0.296

1.9 Clarity

Transparent

TransparentWalter Schumann

Peridot and Rock Crystal Optic Character

Peridot and Rock Crystal optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Peridot and Rock Crystal Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Peridot and Rock Crystal optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

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Peridot and Rock Crystal Transparency

Similar to their colors, Peridot and Rock Crystal transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Peridot is Transparent while Peridot is Transparent in appearance.