Demantoid and Super Seven Crystals Optical Properties

Demantoid

Super Seven Crystals

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine

Vitreous, Pearly, Silky

1.2 Pleochroism

None

Not Available

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004)

Transparent, Translucent, Opaque

1.5 Refractive Index

1.880-1.8901.519-1.521

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

cubic

monoclinic

1.8 Birefringence

Not Available0.0090-0.0100

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Not Available

Demantoid and Super Seven Crystals Optic Character

Demantoid and Super Seven Crystals optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Demantoid and Super Seven Crystals 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 Demantoid and Super Seven Crystals 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 Green Gemstones

Demantoid Vs Emerald

Demantoid Vs Euclase

Demantoid Vs Faustite

Demantoid and Super Seven Crystals Transparency

Similar to their colors, Demantoid and Super Seven Crystals 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, Demantoid is Gemmological Tables (2004) while Demantoid is Gemmological Tables (2004) in appearance.