Quartz and Mottramite Optical Properties

Quartz

Mottramite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

Greasy

1.2 Pleochroism

None

Visible X=Y= canary yellow to greenish yellow

1.3 Dispersion

0.01NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to translucent

Not Available

1.5 Refractive Index

1.544-1.5532.170

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.0090.150

0 0.296

1.9 Clarity

Opaque

Not Available

Quartz and Mottramite Optic Character

Quartz and Mottramite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Quartz and Mottramite 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 Quartz and Mottramite 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 Gems for Taurus » More

Quartz Vs Kyanite

Quartz Vs Bixbite

Quartz Vs Peridot

» More

More Compare Gems for Taurus

Quartz and Mottramite Transparency

Similar to their colors, Quartz and Mottramite 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, Quartz is Translucent, Transparent and Transparent to translucent while Quartz is Translucent, Transparent and Transparent to translucent in appearance.