Brucite and Mottramite Optical Properties

Brucite

Mottramite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Pearly

Greasy

1.2 Pleochroism

Not Available

Visible X=Y= canary yellow to greenish yellow

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TransparentMichael OâDonoghue, Gems, Sixth Edition (2006)

Not Available

1.5 Refractive Index

1.56-1.602.170

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic

1.8 Birefringence

0.010-0.0200.150

0 0.296

1.9 Clarity

TransparentMichael OâDonoghue

Not Available

Brucite and Mottramite Optic Character

Brucite and Mottramite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Brucite 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 Brucite 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 Blue Gemstones

Brucite Vs Chrysocolla

Brucite Vs Chrome Tourmaline

Brucite Vs Common Opal

Brucite and Mottramite Transparency

Similar to their colors, Brucite 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, Brucite is Gems, Sixth Edition (2006) and TransparentMichael OâDonoghue while Brucite is Gems, Sixth Edition (2006) and TransparentMichael OâDonoghue in appearance.