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Chrysoprase
Chrysoprase

Star Sapphire
Star Sapphire



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Chrysoprase
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Star Sapphire

Chrysoprase and Star Sapphire Optical Properties

Optical Properties

Luster

Pleochroism

Dispersion

Transparency

Refractive Index

Optic Character

Crystal System

Birefringence

Clarity

 
Vitreous, Waxy
-
0.01
Translucent, Opaque, Translucent to nearly opaque
1.530-1.543
-
Trigonal
0.004
Translucent
 
-
-
0.02
Transparent, Translucent
1.758-1.780
-
-
0.007-0.010
Transparent

Chrysoprase and Star Sapphire Optic Character

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

Chrysoprase and Star Sapphire Transparency

Similar to their colors, Chrysoprase and Star Sapphire 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, Chrysoprase is while Chrysoprase is in appearance.