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Staurolite
Staurolite

Rosasite
Rosasite



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Staurolite
X
Rosasite

Staurolite and Rosasite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Silky, Vitreous
1.2 Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Blue Chart Gem Identification (2010) More from other references
Not Available
1.5 Refractive Index
1.736-1.7621.672-1.688
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
monoclinic
1.8 Birefringence
0.009-0.0150.139-0.143
Achroite
0 0.296
1.9 Clarity
Blue Chart Gem Identification (2010) More from other references
Not Available

Staurolite and Rosasite Optic Character

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

Similar to their colors, Staurolite and Rosasite 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.