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Apophyllite
Apophyllite

Common Opal
Common Opal



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Apophyllite
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Common Opal

Apophyllite and Common Opal Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Pearly
Not Available
1.2 Pleochroism
Dichroic (colorless)
AbsentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.530-1.5431.37-1.52
Agate Opal
1 3.25
1.6 Optic Character
Uniaxial/-
Not Available
1.7 Crystal System
tetragonal
Not Available
1.8 Birefringence
0.000-0.003Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Apophyllite and Common Opal Optic Character

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

Apophyllite and Common Opal Transparency

Similar to their colors, Apophyllite and Common Opal 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, Apophyllite is Translucent and Transparent while Apophyllite is Translucent and Transparent in appearance.