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Gypsum
Gypsum

Marble
Marble



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Gypsum
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Marble

Gypsum and Marble Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Silky, Pearly, Waxy
Not Available
1.2 Pleochroism
None
Not Available
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Not Available
1.5 Refractive Index
1.521-1.531Not Available
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Not Available
1.8 Birefringence
0.010Not Available
Achroite
0 0.296
1.9 Clarity
Transparent
Not Available

Gypsum and Marble Optic Character

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

Gypsum and Marble Transparency

Similar to their colors, Gypsum and Marble 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, Gypsum is Translucent and Transparent while Gypsum is Translucent and Transparent in appearance.