Snowflake Obsidian and Vivianite Optical Properties

Snowflake Obsidian

Vivianite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous, Pearly

1.2 Pleochroism

Not Available

Anomalous plechroism is strong with colours deep blue/pale yellowish green/yellowish green.Michael OâDonoghue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent, Translucent

Transparent

1.5 Refractive Index

1.450-1.5501.560-1.640

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

1.8 Birefringence

Not Available0.054-0.075

0 0.296

1.9 Clarity

Transparent

Snowflake Obsidian and Vivianite Optic Character

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

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Snowflake Obsidian and Vivianite Transparency

Similar to their colors, Snowflake Obsidian and Vivianite 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, Snowflake Obsidian is Translucent and Transparent while Snowflake Obsidian is Translucent and Transparent in appearance.