Home
×

Sapphire
Sapphire

Foitite
Foitite



ADD
Compare
X
Sapphire
X
Foitite

Sapphire and Foitite Optical Properties

Add ⊕
1 Optical Properties
1.1 Luster
Vitreous, Adamantine, Vitreous, Adamantine
Vitreous
1.2 Pleochroism
Strong
Strong: pale lavender dark blueAnthony et al
1.3 Dispersion
Albite Optical ..
0.02
Rank: 21 (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent, Translucent, Transparent to opaque
TranslucentAnthony et al, Translucent
1.5 Refractive Index
1.762-1.788
Not Available
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal Ditrigonal Pyramidal H-M Symbol (3m) Space Group: R 3m
1.8 Birefringence
0.008-0.009
Not Available
1.9 Clarity
Transparent
TranslucentAnthony et al

Sapphire and Foitite Optic Character

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

Sapphire and Foitite Transparency

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