Carnelian and Star Ruby Optical Properties

Carnelian

Star Ruby

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1 Optical Properties

1.1 Luster

Vitreous

Not Available

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Translucent, Transparent to nearly opaque

Transparent, Translucent

1.5 Refractive Index

1.535-1.5391.757-1.780

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Not Available

1.8 Birefringence

0.003-0.0090.007-0.010

0 0.296

1.9 Clarity

Translucent

Transparent

Carnelian and Star Ruby Optic Character

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

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Carnelian and Star Ruby Transparency

Similar to their colors, Carnelian and Star 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, Carnelian is Translucent and Transparent to nearly opaque while Carnelian is Translucent and Transparent to nearly opaque in appearance.