Staurolite and Amazonite Optical Properties

Staurolite

Amazonite

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1 Optical Properties

1.1 Luster

Resinous

Vitreous

1.2 Pleochroism

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

WeakMichael OâDonoghue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Blue Chart Gem Identification (2010) More from other references

Translucent, Translucent to opaque

1.5 Refractive Index

1.736-1.7621.522-1.530

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

Triclinic

1.8 Birefringence

0.009-0.0150.008-0.010

0 0.296

1.9 Clarity

Blue Chart Gem Identification (2010) More from other references

Translucent

Staurolite and Amazonite Optic Character

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

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Staurolite and Amazonite Transparency

Similar to their colors, Staurolite and Amazonite 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 Blue Chart Gem Identification (2010) More from other references while Staurolite is Blue Chart Gem Identification (2010) More from other references in appearance.