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Strontianite
Strontianite

Helenite
Helenite



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Strontianite
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Helenite

Strontianite and Helenite Optical Properties

Optical Properties

Luster

Vitreous, Greasy
-

Pleochroism

-
-

Dispersion

0.040.04
0.005 1
👆🏻

Transparency

Transparent
-

Refractive Index

1.517-1.667-9999
1 3.25
👆🏻

Optic Character

-
-

Crystal System

-
-

Birefringence

-9999-9999
0 0.296
👆🏻

Clarity

Transparent
-

Strontianite and Helenite Optic Character

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

Strontianite and Helenite Transparency

Similar to their colors, Strontianite and Helenite 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, Strontianite is Transparent while Strontianite is Transparent in appearance.