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Malachite
Malachite

Adularia
Adularia



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Malachite
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Adularia

Malachite and Adularia Optical Properties

1 Optical Properties
1.1 Luster
Adamantine, Vitreous, Silky, Fibrous
Not Available
1.2 Pleochroism
Not Available
Not Available
1.3 Dispersion
NoneNA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Opaque
TransparentArthur Thomas, Gemstones (2009)
1.5 Refractive Index
1.655-1.9091.518-1.536
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.2540.005-0.008
Achroite
0 0.296
1.9 Clarity
Gemmological Tables (2004) More from other references
TransparentArthur Thomas

Malachite and Adularia Optic Character

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

Malachite and Adularia Transparency

Similar to their colors, Malachite and Adularia 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, Malachite is Opaque while Malachite is Opaque in appearance.