Hureaulite and Hematite Optical Properties

Hureaulite

Hematite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Greasy

Not Available

1.2 Pleochroism

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

O = brownish red; E = yellowish red

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Transparent

OpaqueHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010) More from other references

1.5 Refractive Index

1.647-1.6672.690-3.220

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

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

Trigonal

1.8 Birefringence

0.0120.280

0 0.296

1.9 Clarity

Transparent

OpaqueHerve Nicolas Lazzarelli

Hureaulite and Hematite Optic Character

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

Hureaulite Vs Lepidolite

Hureaulite Vs Meionite

Hureaulite Vs Marialite

Hureaulite and Hematite Transparency

Similar to their colors, Hureaulite and Hematite 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, Hureaulite is Transparent while Hureaulite is Transparent in appearance.