Liddicoatite and Williamsite Optical Properties

Liddicoatite

Williamsite

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1 Optical Properties

1.1 Luster

Vitreous

Waxy, Silky, Resinous, Greasy

1.2 Pleochroism

Strong: dark brown light brownAnthony et al

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

1.5 Refractive Index

Not Available1.530-1.575

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Transparent

TranslucentHerve Nicolas Lazzarelli

Liddicoatite and Williamsite Optic Character

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

Similar to their colors, Liddicoatite and Williamsite 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, Liddicoatite is Transparent while Liddicoatite is Transparent in appearance.