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Phlogopite and Pleonaste Optical Properties


Pleonaste and Phlogopite Optical Properties


Optical Properties

Luster
Pearly   
Not Available   

Pleochroism
Not Available   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Gemmological Tables (2004)   

Refractive Index
1.530-1.573   
1.780   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Not Available   

Birefringence
0.0280-0.0450   
Not Available   

Clarity
Not Available   
Gemmological Tables (2004)   

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<< Physical Properties

Phlogopite and Pleonaste Optic Character

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

Similar to their colors, Phlogopite and Pleonaste 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, Phlogopite is Not Available while Phlogopite is Not Available in appearance.

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