×

Pearl
Pearl

Astrophyllite
Astrophyllite



ADD
Compare
X
Pearl
X
Astrophyllite

Pearl and Astrophyllite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Greasy, Pearly
1.2 Pleochroism
AbsentWalter Schumann
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent, Opaque
Translucent
1.5 Refractive Index
1.52-1.661.678-1.758
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.1560.050
Achroite
0 0.296
1.9 Clarity
Translucent
Translucent

Pearl and Astrophyllite Optic Character

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

Similar to their colors, Pearl and Astrophyllite 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.