Moldavite and Foitite Optical Properties

Moldavite

Foitite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Absent

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Translucent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.48-1.54Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Moldavite and Foitite Optic Character

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

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