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Milk Opal
Milk Opal

Ruby
Ruby



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Milk Opal
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Ruby

Milk Opal and Ruby Optical Properties

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Optical Properties

Luster

-
Vitreous, Adamantine

Pleochroism

-
Strong: purplish-red

Dispersion

0.010.02
0.005 1
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Transparency

Translucent
Transparent, Translucent, Transparent to opaque

Refractive Index

1.37-1.521.762-1.778
1 3.25
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Optic Character

-
-

Crystal System

-
Trigonal

Birefringence

-99990.008
0 0.296
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Clarity

-
Transparent

Milk Opal and Ruby Optic Character

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

Milk Opal and Ruby Transparency

Similar to their colors, Milk Opal and Ruby 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, Milk Opal is Translucent while Milk Opal is Translucent in appearance.