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Cordierite
Cordierite

Realgar
Realgar



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X
Cordierite
X
Realgar

Cordierite and Realgar Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Not Available
1.2 Pleochroism
X = pale yellow
Nearly colorless to pale golden yellowAnthony et al
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Gems
1.5 Refractive Index
Not Available2.538-2.704
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Not Available
1.8 Birefringence
Not Available0.166
Achroite
0 0.296
1.9 Clarity
Not Available
Gems

Cordierite and Realgar Optic Character

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

Cordierite and Realgar Transparency

Similar to their colors, Cordierite and Realgar 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, Cordierite is Not Available while Cordierite is Not Available in appearance.