Moonstone and Foitite Optical Properties

Moonstone

Foitite

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1 Optical Properties

1.1 Luster

Pearly

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Transparent, Transparent to translucent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.518-1.527Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

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

1.8 Birefringence

0.006-0.007Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Moonstone and Foitite Optic Character

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

Similar to their colors, Moonstone 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, Moonstone is Transparent and Transparent to translucent while Moonstone is Transparent and Transparent to translucent in appearance.