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Staurolite
Staurolite

Dioptase
Dioptase



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Staurolite
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Dioptase

Staurolite and Dioptase Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Vitreous
1.2 Pleochroism
X = colorless; Y = pale yellow; Z = golden yellow
Weak; dark emerald green
1.3 Dispersion
NA0.04
Fluorite Optical Properties
0.007 1
1.4 Transparency
Blue Chart Gem Identification (2010) More from other references
TranslucentHerve Nicolas Lazzarelli
1.5 Refractive Index
1.736-1.7621.644-1.720
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
monoclinic
Trigonal
1.8 Birefringence
0.009-0.0150.051-0.053
Achroite
0 0.296
1.9 Clarity
Blue Chart Gem Identification (2010) More from other references
TranslucentHerve Nicolas Lazzarelli

Staurolite and Dioptase Optic Character

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

Similar to their colors, Staurolite and Dioptase 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.