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Common Opal
Common Opal

Rock Crystal
Rock Crystal



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Common Opal
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Rock Crystal

Common Opal and Rock Crystal Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Not Available
1.2 Pleochroism
AbsentWalter Schumann
AbsentWalter Schumann
1.3 Dispersion
Albite Optical ..
None
Rank: N/A (Overall)
0.01
Rank: 27 (Overall)
Fluorite Optical Properties
1.4 Transparency
Translucent
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
1.5 Refractive Index
1.37-1.52
1.544-1.553
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Not Available
1.8 Birefringence
Not Available
0.009
1.9 Clarity
Translucent
TransparentWalter Schumann

Common Opal and Rock Crystal Optic Character

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

Common Opal and Rock Crystal Transparency

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