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Cordierite
Cordierite

Sunstone
Sunstone



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Cordierite
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Sunstone

Cordierite and Sunstone Optical Properties

1 Optical Properties
1.1 Luster
Greasy, Vitreous
Vitreous
1.2 Pleochroism
X = pale yellow
Weak or absentWalter Schumann
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Transparent, Translucent, Transparent to translucent
1.5 Refractive Index
Not Available1.53-1.55
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
Not Available0.007-0.010
Achroite
0 0.296
1.9 Clarity
Not Available
Transparent to translucent

Cordierite and Sunstone Optic Character

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

Similar to their colors, Cordierite and Sunstone 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.