Anthophyllite and Rosasite Optical Properties

Anthophyllite

Rosasite

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1 Optical Properties

1.1 Luster

Vitreous, Pearly

Silky, Vitreous

1.2 Pleochroism

When Fe-rich

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

Not Available

1.5 Refractive Index

1.603-1.6901.672-1.688

1 3.25

1.6 Optic Character

Biaxial/+

Not Available

1.7 Crystal System

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

monoclinic

1.8 Birefringence

Not Available0.139-0.143

0 0.296

1.9 Clarity

Transparent

Not Available

Anthophyllite and Rosasite Optic Character

Anthophyllite and Rosasite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Anthophyllite and Rosasite 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 Anthophyllite and Rosasite 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. Anthophyllite has Biaxial/+ character.

Compare Brown Gemstones

Anthophyllite Vs Brucite

Anthophyllite Vs Bronzite

Anthophyllite Vs Brookite

Anthophyllite and Rosasite Transparency

Similar to their colors, Anthophyllite and Rosasite 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, Anthophyllite is Transparent while Anthophyllite is Transparent in appearance.