Bayldonite and Sillimanite Optical Properties

Bayldonite

Sillimanite

Add ⊕

1 Optical Properties

1.1 Luster

Resinous

Vitreous, Subadamantine, Silky

1.2 Pleochroism

Not Available

Colourless to pale brown to yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Transparent, Translucent

1.5 Refractive Index

Not Available1.653-1.685

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Orthorhombic

1.8 Birefringence

Not Available0.020-0.022

0 0.296

1.9 Clarity

Not Available

Transparent

Bayldonite and Sillimanite Optic Character

Bayldonite and Sillimanite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Bayldonite and Sillimanite 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 Bayldonite and Sillimanite 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 Green Gemstones

Bayldonite Vs Cordierite

Bayldonite Vs Apophyllite KF

Bayldonite Vs Gaspeite

Bayldonite and Sillimanite Transparency

Similar to their colors, Bayldonite and Sillimanite 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, Bayldonite is Not Available while Bayldonite is Not Available in appearance.