Nuummite and Hureaulite Optical Properties

Nuummite

Hureaulite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Vitreous, Greasy

1.2 Pleochroism

Not Available

Colorless yellow to pale rose reddish yellow to reddish brown.Anthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Transparent

1.5 Refractive Index

1.635-1.6631.647-1.667

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Monoclinic Prismatic H-M Symbol (2/m) Space Group: C 2/c

1.8 Birefringence

0.0170-0.2300.012

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Transparent

Nuummite and Hureaulite Optic Character

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

Nuummite Vs Pezzottaite

Nuummite Vs Phosphosiderite

Nuummite Vs Pleonaste

Nuummite and Hureaulite Transparency

Similar to their colors, Nuummite and Hureaulite 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, Nuummite is Gemmological Tables (2004) More from other references while Nuummite is Gemmological Tables (2004) More from other references in appearance.