Goethite and Lizardite Optical Properties

Goethite

Lizardite

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1 Optical Properties

1.1 Luster

Adamantine

Not Available

1.2 Pleochroism

VisibleArthur Thomas

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemstones (2009)

TranslucentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

2.26-2.3981.538-1.560

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Not Available

1.8 Birefringence

0.138Not Available

0 0.296

1.9 Clarity

Gemstones (2009)

TranslucentAnthony et al

Goethite and Lizardite Optic Character

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

Similar to their colors, Goethite and Lizardite 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, Goethite is Gemstones (2009) while Goethite is Gemstones (2009) in appearance.