×

Phlogopite
Phlogopite

Peridot
Peridot



ADD
Compare
X
Phlogopite
X
Peridot

Phlogopite and Peridot Optical Properties

Optical Properties

Luster

Pearly
Vitreous, Greasy

Pleochroism

-
Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.530-1.5731.64-1.69
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.0280-0.04500.036
0 0.296
👆🏻

Clarity

-
Transparent

Phlogopite and Peridot Optic Character

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

Phlogopite and Peridot Transparency

Similar to their colors, Phlogopite and Peridot 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 while Phlogopite is in appearance.