Diamond and Bertrandite Optical Properties

Diamond

Bertrandite

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Optical Properties

Luster

Adamantine

Vitreous

Pleochroism

None

none.

Dispersion

0.040.01

0.005 1

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Transparency

Transparent, Translucent, Transparent to opaque

TransparentAnthony et al

Refractive Index

2.417-2.4191.583-1.614

1 3.25

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Optic Character

Crystal System

cubic

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

Birefringence

-9999-9999

0 0.296

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Clarity

Transparent

TransparentAnthony et al

Diamond and Bertrandite Optic Character

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

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Diamond and Bertrandite Transparency

Similar to their colors, Diamond and Bertrandite 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.