Nuummite and Rosasite Optical Properties

Nuummite

Rosasite

Add ⊕

1 Optical Properties

1.1 Luster

Not Available

Silky, Vitreous

1.2 Pleochroism

Not Available

Strong: X = pale emerald green or colourless; Y = dark emerald green or pale blue; Z = dark emerald green or pale blue

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Not Available

1.5 Refractive Index

1.635-1.6631.672-1.688

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

monoclinic

1.8 Birefringence

0.0170-0.2300.139-0.143

0 0.296

1.9 Clarity

Gemmological Tables (2004) More from other references

Not Available

Nuummite and Rosasite Optic Character

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

Similar to their colors, Nuummite and Rosasite 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.