Home
×

Polyhalite
Polyhalite

Andalusite
Andalusite



ADD
Compare
X
Polyhalite
X
Andalusite

Polyhalite and Andalusite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Vitreous, Greasy
1.2 Pleochroism
Not Available
strongly trichroic
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
0.02
Rank: 23 (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Transparent, Translucent
1.5 Refractive Index
1.546-1.548
1.627-1.650
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Orthorhombic
1.8 Birefringence
0.021
0.009-0.010
1.9 Clarity
Not Available
Transparent

Polyhalite and Andalusite Optic Character

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

Polyhalite and Andalusite Transparency

Similar to their colors, Polyhalite and Andalusite 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, Polyhalite is Not Available while Polyhalite is Not Available in appearance.

Let Others Know
×