Cordierite and Star Ruby Optical Properties

Cordierite

Star Ruby

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1 Optical Properties

1.1 Luster

Greasy, Vitreous

Not Available

1.2 Pleochroism

X = pale yellow

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

Not Available1.757-1.780

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

Not Available0.007-0.010

0 0.296

1.9 Clarity

Not Available

Transparent

Cordierite and Star Ruby Optic Character

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

Cordierite Vs Plumbogummite

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Cordierite and Star Ruby Transparency

Similar to their colors, Cordierite 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, Cordierite is Not Available while Cordierite is Not Available in appearance.