Apache Tear and Andalusite Optical Properties

Apache Tear

Andalusite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Greasy

1.2 Pleochroism

Not Available

strongly trichroic

1.3 Dispersion

NA0.02

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

Not Available1.627-1.650

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

Orthorhombic

1.8 Birefringence

Not Available0.009-0.010

0 0.296

1.9 Clarity

Not Available

Transparent

Apache Tear and Andalusite Optic Character

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

Similar to their colors, Apache Tear and Andalusite 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, Apache Tear is Not Available while Apache Tear is Not Available in appearance.