Datolite and Foitite Optical Properties

Datolite

Foitite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

NilArthur Thomas

Strong: pale lavender dark blueAnthony et al

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

TranslucentAnthony et al, Translucent

1.5 Refractive Index

1.621-1.675Not 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

0.044Not Available

0 0.296

1.9 Clarity

Transparent

TranslucentAnthony et al

Datolite and Foitite Optic Character

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

Compare Green Gemstones

Datolite Vs Elaeolite

Datolite Vs Euclase

Datolite Vs Emerald

Datolite and Foitite Transparency

Similar to their colors, Datolite 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, Datolite is Transparent while Datolite is Transparent in appearance.