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Phlogopite and Eosphorite Optical Properties


Eosphorite and Phlogopite Optical Properties


Optical Properties

Luster
Pearly   
Vitreous, Resinous   

Pleochroism
Not Available   
Visible: X = yellow; Y = pink; Z = pale pink to colorless   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Transparent   

Refractive Index
1.530-1.573   
1.639-1.672   

Optic Character
Not Available   
Not Available   

Crystal System
monoclinic   
Orthorhombic   

Birefringence
0.0280-0.0450   
0.029-0.032   

Clarity
Not Available   
Transparent   

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Phlogopite and Eosphorite Optic Character

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

Similar to their colors, Phlogopite and Eosphorite 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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