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Hackmanite
Hackmanite

Willemite
Willemite



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Hackmanite
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Willemite

Hackmanite and Willemite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Vitreous, Resinous
1.2 Pleochroism
Not Available
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004)
Transparent, Translucent
1.5 Refractive Index
1.483-1.4871.687-1.723
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
Trigonal
1.8 Birefringence
Not Available0.028-0.030
Achroite
0 0.296
1.9 Clarity
Transparent
Transparent

Hackmanite and Willemite Optic Character

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

Hackmanite and Willemite Transparency

Similar to their colors, Hackmanite and Willemite 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, Hackmanite is Gemmological Tables (2004) while Hackmanite is Gemmological Tables (2004) in appearance.