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Danburite
Danburite

Antigorite
Antigorite



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Danburite
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Antigorite

Danburite and Antigorite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
Waxy, Silky, Resinous, Greasy

Pleochroism

Weak: pale yellow yellow
pale greenish yellow

Dispersion

0.020.02
0.005 1
👆🏻

Transparency

-
Translucent

Refractive Index

1.627-1.6391.530-1.575
1 3.25
👆🏻

Optic Character

Biaxial/+
-

Crystal System

Orthorhombic
Monoclinic Domatic H-M Symbol (m) Space Group: Cm

Birefringence

0.006-9999
0 0.296
👆🏻

Clarity

TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Danburite and Antigorite Optic Character

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

Danburite and Antigorite Transparency

Similar to their colors, Danburite and Antigorite 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, Danburite is while Danburite is in appearance.