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Staurolite
Staurolite

Boracite
Boracite



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X
Staurolite
X
Boracite

Staurolite and Boracite Optical Properties

Optical Properties

Luster

Resinous
Vitreous, Adamantine

Pleochroism

X = colorless; Y = pale yellow; Z = golden yellow
None

Dispersion

0.02-
0.005 1
👆🏻

Transparency

-
Transparent

Refractive Index

1.736-1.7621.658-1.673
1 3.25
👆🏻

Optic Character

-
-

Crystal System

monoclinic
Orthorhombic

Birefringence

0.009-0.0150.010-0.011
0 0.296
👆🏻

Clarity

-
Transparent

Staurolite and Boracite Optic Character

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

Staurolite and Boracite Transparency

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