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Willemite
Willemite

Antigorite
Antigorite



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Willemite
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Antigorite

Willemite and Antigorite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous
Waxy, Silky, Resinous, Greasy
1.2 Pleochroism
NilArthur Thomas
pale greenish yellow.
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Translucent
1.5 Refractive Index
1.687-1.7231.530-1.575
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Monoclinic Domatic H-M Symbol (m) Space Group: Cm
1.8 Birefringence
0.028-0.030Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Willemite and Antigorite Optic Character

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

Willemite and Antigorite Transparency

Similar to their colors, Willemite and Antigorite 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, Willemite is Translucent and Transparent while Willemite is Translucent and Transparent in appearance.