Jadeite and Foitite Optical Properties

Jadeite

Foitite

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1 Optical Properties

1.1 Luster

Pearly

Vitreous

1.2 Pleochroism

NilArthur Thomas

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.652-1.688Not 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

0.013-0.020Not Available

0 0.296

1.9 Clarity

Translucent

TranslucentAnthony et al

Jadeite and Foitite Optic Character

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

Similar to their colors, Jadeite 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, Jadeite is Translucent while Jadeite is Translucent in appearance.