Polyhalite and Apache Tear Optical Properties

Polyhalite

Apache Tear

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1 Optical Properties

1.1 Luster

Vitreous, Resinous

Not Available

1.2 Pleochroism

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.546-1.548Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Triclinic

Amorphous

1.8 Birefringence

0.021Not Available

0 0.296

1.9 Clarity

Not Available

Polyhalite and Apache Tear Optic Character

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

Similar to their colors, Polyhalite and Apache Tear 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, Polyhalite is Not Available while Polyhalite is Not Available in appearance.