Cordierite and Apophyllite KF Optical Properties

Cordierite

Apophyllite KF

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1 Optical Properties

1.1 Luster

Greasy, Vitreous

Vitreous, Pearly

1.2 Pleochroism

X = pale yellow

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

Not Available1.530-1.536

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

tetragonal

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

Not Available

Cordierite and Apophyllite KF Optic Character

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

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Cordierite and Apophyllite KF Transparency

Similar to their colors, Cordierite and Apophyllite KF 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.