Lizardite and Petalite Optical Properties

Lizardite

Petalite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Pearly

1.2 Pleochroism

Not Available

AbsentWalter Schumann

1.3 Dispersion

NA0.01

0.007 1

1.4 Transparency

TranslucentAnthony et al, Handbook of mineralogy (2001)

Gemmological Tables (2004) More from other references

1.5 Refractive Index

1.538-1.5601.502-1.523

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

Not Available0.012-0.016

0 0.296

1.9 Clarity

TranslucentAnthony et al

TransparentUlrich Henn and Claudio C. Milisenda

Lizardite and Petalite Optic Character

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

Similar to their colors, Lizardite and Petalite 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, Lizardite is Handbook of mineralogy (2001) and TranslucentAnthony et al while Lizardite is Handbook of mineralogy (2001) and TranslucentAnthony et al in appearance.