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Peridot
Peridot

Hardystonite
Hardystonite



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Peridot
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Hardystonite

Peridot and Hardystonite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Resinous, Greasy
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Handbook of mineralogy (2001)
1.5 Refractive Index
1.64-1.691.672
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
tetragonal
1.8 Birefringence
0.036Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Handbook of mineralogy (2001)

Peridot and Hardystonite Optic Character

Peridot and Hardystonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Peridot and Hardystonite 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 Hardystonite 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.

Peridot and Hardystonite Transparency

Similar to their colors, Peridot and Hardystonite 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.