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Lawsonite and Phlogopite Optical Properties


Phlogopite and Lawsonite Optical Properties


Optical Properties

Luster
Vitreous, Greasy   
Pearly   

Pleochroism
Weak   
Not Available   

Dispersion
Not Available   
Not Available   

Transparency
Not Available   
Not Available   

Refractive Index
1.672-1.676   
1.530-1.573   

Optic Character
Not Available   
Not Available   

Crystal System
Orthorhombic   
monoclinic   

Birefringence
0.019-0.021   
0.0280-0.0450   

Clarity
Not Available   
Not Available   

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Lawsonite and Phlogopite Optic Character

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

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

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