×

Pearl
Pearl

Franklinite
Franklinite



ADD
Compare
X
Pearl
X
Franklinite

Pearl and Franklinite Optical Properties

Add ⊕
1 Optical Properties
1.1 Luster
Pearly
Not Available
1.2 Pleochroism
AbsentWalter Schumann
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque
Translucent
1.5 Refractive Index
1.52-1.66Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Isometric Hexoctahedral H-M Symbol (4/m 3 2/m) Space Group: F d3m
1.8 Birefringence
0.156Not Available
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Pearl and Franklinite Optic Character

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

Pearl and Franklinite Transparency

Similar to their colors, Pearl and Franklinite 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, Pearl is Opaque and Translucent while Pearl is Opaque and Translucent in appearance.