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Gypsum and Hackmanite Optical Properties


Hackmanite and Gypsum Optical Properties


Optical Properties

Luster
Vitreous, Silky, Pearly, Waxy   
Vitreous   

Pleochroism
None   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Transparent, Translucent   
Gemmological Tables (2004)   

Refractive Index
1.521-1.531   
1.483-1.487   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Not Available   

Birefringence
0.010   
Not Available   

Clarity
Transparent   
Transparent   

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Gypsum and Hackmanite Optic Character

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

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Gypsum and Hackmanite Transparency

Similar to their colors, Gypsum and Hackmanite 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, Gypsum is Translucent and Transparent while Gypsum is Translucent and Transparent in appearance.

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