Biotite and Apache Tear Optical Properties

Biotite

Apache Tear

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Pearly

Not Available

1.2 Pleochroism

Strong

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

1.5 Refractive Index

1.565-1.625Not Available

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Amorphous

1.8 Birefringence

0.03-0.07Not Available

0 0.296

1.9 Clarity

Not Available

Biotite and Apache Tear Optic Character

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

Compare Yellow Gemstones

Biotite Vs Hanksite

Biotite Vs Gyrolite

Biotite Vs Hauyne

Biotite and Apache Tear Transparency

Similar to their colors, Biotite 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, Biotite is Not Available while Biotite is Not Available in appearance.