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Malachite
Malachite

Staurolite
Staurolite



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Malachite
X
Staurolite

Malachite and Staurolite Optical Properties

Optical Properties

Luster

Adamantine, Vitreous, Silky
Resinous

Pleochroism

-
X = colorless; Y = pale yellow; Z = golden yellow

Dispersion

0.040.02
0.005 1
👆🏻

Transparency

Opaque
-

Refractive Index

1.655-1.9091.736-1.762
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
monoclinic

Birefringence

0.2540.009-0.015
0 0.296
👆🏻

Clarity

-
-

Malachite and Staurolite Optic Character

Malachite and Staurolite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Malachite and Staurolite 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 Malachite and Staurolite 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.

Malachite and Staurolite Transparency

Similar to their colors, Malachite and Staurolite 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, Malachite is Opaque while Malachite is Opaque in appearance.