Verdite and Staurolite Optical Properties

Verdite

Staurolite

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1 Optical Properties

1.1 Luster

Vitreous, Silky

Resinous

1.2 Pleochroism

Extreme

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

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Translucent

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.5801.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

monoclinic

1.8 Birefringence

Not Available0.009-0.015

0 0.296

1.9 Clarity

Translucent

Blue Chart Gem Identification (2010) More from other references

Verdite and Staurolite Optic Character

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

Compare Blue Gemstones

Verdite Vs White Opal

Verdite Vs Yttrium Aluminium Garnet

Verdite Vs Zircon

Verdite and Staurolite Transparency

Similar to their colors, Verdite 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, Verdite is Translucent while Verdite is Translucent in appearance.