Home
Gemstones


Howlite and Actinolite Optical Properties


Actinolite and Howlite Optical Properties


Optical Properties

Luster
Vitreous   
Vitreous   

Pleochroism
NilArthur Thomas   
moderate   

Dispersion
Not Available   
Not Available   

Transparency
Gemmological Tables (2004) More from other references   
TransparentUlrich Henn and Claudio C. Milisenda, Gemmological Tables (2004) More from other references   

Refractive Index
1.583-1.608   
1.613-1.628   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
monoclinic   

Birefringence
0.019   
0.0250-0.0270   

Clarity
Gemmological Tables (2004) More from other references   
TransparentUlrich Henn and Claudio C. Milisenda   

Benefits >>
<< Physical Properties

Howlite and Actinolite Optic Character

Howlite and Actinolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Howlite and Actinolite 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 Howlite and Actinolite 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 Gems for Gemini

Howlite and Actinolite Transparency

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

Gemini Gems

Gemini Gems

» More Gemini Gems

Compare Gems for Gemini

» More Compare Gems for Gemini