×

Dallasite
Dallasite

Staurolite
Staurolite



ADD
Compare
X
Dallasite
X
Staurolite

Dallasite and Staurolite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Resinous
1.2 Pleochroism
Not Available
X = colorless; Y = pale yellow; Z = golden yellow
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
Blue Chart Gem Identification (2010) More from other references
1.5 Refractive Index
1.5401.736-1.762
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
0.008-0.0100.009-0.015
Achroite
0 0.296
1.9 Clarity
Not Available
Blue Chart Gem Identification (2010) More from other references

Dallasite and Staurolite Optic Character

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

Dallasite and Staurolite Transparency

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