Diamond and Apophyllite Optical Properties

Diamond

Apophyllite

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Optical Properties

Luster

Adamantine

Vitreous, Pearly

Pleochroism

None

Dichroic (colorless)

Dispersion

0.040.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to opaque

Transparent, Translucent

Refractive Index

2.417-2.4191.530-1.543

1 3.25

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Optic Character

Uniaxial/-

Crystal System

cubic

tetragonal

Birefringence

-99990.000-0.003

0 0.296

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Clarity

Transparent

Diamond and Apophyllite Optic Character

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

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Diamond and Apophyllite Transparency

Similar to their colors, Diamond 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, Diamond is Transparent, Translucent and Transparent to opaque while Diamond is Transparent, Translucent and Transparent to opaque in appearance.