Sapphire and Hodgkinsonite Optical Properties

Sapphire

Hodgkinsonite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Adamantine, Vitreous, Adamantine

Vitreous

1.2 Pleochroism

Strong

Lavender and pale purple for transparent pink stones.Michael OâDonoghue

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent, Translucent, Transparent to opaque

Gems

1.5 Refractive Index

1.762-1.7881.720-1.746

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

monoclinic

1.8 Birefringence

0.008-0.0090.026

0 0.296

1.9 Clarity

Transparent

Gems

Sapphire and Hodgkinsonite Optic Character

Sapphire and Hodgkinsonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Sapphire and Hodgkinsonite 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 Sapphire and Hodgkinsonite 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 Birthstones » More

Sapphire Vs Emerald

Sapphire Vs Opal

Sapphire Vs Ruby

» More

More Compare Birthstones

Sapphire and Hodgkinsonite Transparency

Similar to their colors, Sapphire and Hodgkinsonite 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, Sapphire is Translucent, Transparent and Transparent to opaque while Sapphire is Translucent, Transparent and Transparent to opaque in appearance.