Rosasite and Staurolite Optical Properties

Rosasite

Staurolite

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1 Optical Properties

1.1 Luster

Silky, Vitreous

Resinous

1.2 Pleochroism

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

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

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Not Available

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.672-1.6881.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

monoclinic

1.8 Birefringence

0.139-0.1430.009-0.015

0 0.296

1.9 Clarity

Not Available

Blue Chart Gem Identification (2010) More from other references

Rosasite and Staurolite Optic Character

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

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Rosasite and Staurolite Transparency

Similar to their colors, Rosasite 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, Rosasite is Not Available while Rosasite is Not Available in appearance.