Rutile and Star Sapphire Optical Properties

Rutile

Star Sapphire

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1 Optical Properties

1.1 Luster

Adamantine

Not Available

1.2 Pleochroism

Weak to distinct brownish red-green-yellow

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

1.5 Refractive Index

2.609-2.9031.758-1.780

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

tetragonal

Not Available

1.8 Birefringence

0.2960.007-0.010

0 0.296

1.9 Clarity

Transparent

Rutile and Star Sapphire Optic Character

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

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Rutile and Star Sapphire Transparency

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