Pleonast and Staurolite Optical Properties

Pleonast

Staurolite

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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

0.007 1

1.4 Transparency

Not Available

Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

Not Available1.736-1.762

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

Not Available0.009-0.015

0 0.296

1.9 Clarity

Not Available

Blue Chart Gem Identification (2010) More from other references

Pleonast and Staurolite Optic Character

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

Pleonast Vs Blue gold

Pleonast Vs Star diopside

Pleonast Vs Azure malachite

Pleonast and Staurolite Transparency

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