×

Pyrope
Pyrope

Allanite
Allanite



ADD
Compare
X
Pyrope
X
Allanite

Pyrope and Allanite Optical Properties

Add ⊕
1 Optical Properties
1.1 Luster
Greasy, Vitreous
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
0.02NA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Not Available
1.5 Refractive Index
1.720-1.7561
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
cubic
Not Available
1.8 Birefringence
Not Available0.013-0.036
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Not Available

Pyrope and Allanite Optic Character

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

Pyrope and Allanite Transparency

Similar to their colors, Pyrope and Allanite 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, Pyrope is Gemmological Tables (2004) More from other references while Pyrope is Gemmological Tables (2004) More from other references in appearance.