Home
Gemstones


Nuummite and Apophyllite Optical Properties


Apophyllite and Nuummite Optical Properties


Optical Properties

Luster
Not Available   
Vitreous, Pearly   

Pleochroism
Not Available   
Dichroic (colorless)   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
Transparent, Translucent   

Refractive Index
1.635-1.663   
1.530-1.543   

Optic Character
Not Available   
Uniaxial/-   

Crystal System
Not Available   
tetragonal   

Birefringence
0.0170-0.230   
0.000-0.003   

Clarity
Gemmological Tables (2004) More from other references   
Transparent   

Benefits >>
<< Physical Properties

Nuummite and Apophyllite Optic Character

Nuummite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Nuummite and Apophyllite 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 Nuummite and Apophyllite 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. Apophyllite has Uniaxial/- character.

Compare Green Gemstones

Nuummite and Apophyllite Transparency

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

Green Gemstones

Green Gemstones


Compare Green Gemstones