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Peridot
Peridot

Apophyllite
Apophyllite



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Peridot
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Apophyllite

Peridot and Apophyllite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous, Pearly
1.2 Pleochroism
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli
Dichroic (colorless)
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent
Transparent, Translucent
1.5 Refractive Index
1.64-1.691.530-1.543
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Uniaxial/-
1.7 Crystal System
Orthorhombic
tetragonal
1.8 Birefringence
0.0360.000-0.003
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Peridot and Apophyllite Optic Character

Peridot and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Peridot and Apophyllite 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 Apophyllite 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. Apophyllite has Uniaxial/- character.

Peridot and Apophyllite Transparency

Similar to their colors, Peridot and Apophyllite 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.