Foitite and Liddicoatite Optical Properties

Foitite

Liddicoatite

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1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

Strong: pale lavender dark blueAnthony et al

Strong: dark brown light brownAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentAnthony et al, Translucent

Transparent

1.5 Refractive Index

Not AvailableNot Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

TranslucentAnthony et al

Transparent

Foitite and Liddicoatite Optic Character

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

Similar to their colors, Foitite and Liddicoatite 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, Foitite is Translucent and TranslucentAnthony et al while Foitite is Translucent and TranslucentAnthony et al in appearance.