×

Astrophyllite
Astrophyllite

Hurlbutite
Hurlbutite



ADD
Compare
X
Astrophyllite
X
Hurlbutite

Astrophyllite and Hurlbutite Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Pearly
Vitreous
1.2 Pleochroism
Strong: X= deep red-orange Y= orange-yellow Z= lemon-yellow
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Translucent
Transparent
1.5 Refractive Index
1.678-1.7581.595-1.604
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Triclinic
Monoclinic Prismatic H-M Symbol (2/m) Space Group: P 21/a
1.8 Birefringence
0.0500.009
Achroite
0 0.296
1.9 Clarity
Translucent
Transparent

Astrophyllite and Hurlbutite Optic Character

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

Astrophyllite and Hurlbutite Transparency

Similar to their colors, Astrophyllite and Hurlbutite 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, Astrophyllite is Translucent while Astrophyllite is Translucent in appearance.