Garnet Color Change and Alexandrite Optical Properties

Garnet Color Change

Alexandrite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent, Transparent to nearly opaque

1.5 Refractive Index

Not Available1.739-1.770

1 3.25

1.6 Optic Character

Not Available

Biaxial/+

1.7 Crystal System

Isometric

Orthorhombic

1.8 Birefringence

Not Available0.007-0.010

0 0.296

1.9 Clarity

Color grading system

Transparent

Garnet Color Change and Alexandrite Optic Character

Garnet Color Change and Alexandrite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Garnet Color Change and Alexandrite 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 Garnet Color Change and Alexandrite 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. Alexandrite has Biaxial/+ character.

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Garnet Color Change and Alexandrite Transparency

Similar to their colors, Garnet Color Change and Alexandrite 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, Garnet Color Change is Not Available while Garnet Color Change is Not Available in appearance.