Home
Gemstones


Pumpellyite and Demantoid Garnet Optical Properties


Demantoid Garnet and Pumpellyite Optical Properties


Optical Properties

Luster
Fibrous   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004)   
Not Available   

Refractive Index
1.674-1.764   
1.88-1.89   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Isometric   

Birefringence
0.014-0.016   
Not Available   

Clarity
OpaqueUlrich Henn and Claudio C. Milisenda   
Color grading system   

Benefits >>
<< Physical Properties

Pumpellyite and Demantoid Garnet Optic Character

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

Compare Green Gemstones

Pumpellyite and Demantoid Garnet Transparency

Similar to their colors, Pumpellyite and Demantoid Garnet 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, Pumpellyite is Gemmological Tables (2004) while Pumpellyite is Gemmological Tables (2004) in appearance.

Green Gemstones

Green Gemstones


Compare Green Gemstones