×

Creedite
Creedite

Foitite
Foitite



ADD
Compare
X
Creedite
X
Foitite

Creedite and Foitite Optical Properties

Add ⊕

Optical Properties

Luster

Vitreous
Vitreous

Pleochroism

-
Strong: pale lavender dark blueAnthony et al

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

Transparent, Translucent
TranslucentAnthony et al, Translucent

Refractive Index

1.461-1.485-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

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

Birefringence

0.024-9999
0 0.296
👆🏻

Clarity

Transparent
TranslucentAnthony et al

Creedite and Foitite Optic Character

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

Creedite and Foitite Transparency

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