Ruby and Dioptase Optical Properties

Ruby

Dioptase

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1 Optical Properties

1.1 Luster

Vitreous, Adamantine, Vitreous, Adamantine

Vitreous

1.2 Pleochroism

Strong: purplish-red

Weak; dark emerald green

1.3 Dispersion

0.020.04

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to opaque

TranslucentHerve Nicolas Lazzarelli

1.5 Refractive Index

1.762-1.7781.644-1.720

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

1.8 Birefringence

0.0080.051-0.053

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Ruby and Dioptase Optic Character

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

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