Stibiotantalite and Hibonite Optical Properties

Stibiotantalite

Hibonite

Add ⊕

1 Optical Properties

1.1 Luster

Adamantine

Vitreous

1.2 Pleochroism

Not Available

O = brownish gray; E = gray

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

Gemmological Tables (2004) More from other references

Handbook of mineralogy (2001)

1.5 Refractive Index

2.37-2.451.79-1.807

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Hexagonal

1.8 Birefringence

0.08Not Available

0 0.296

1.9 Clarity

TransparentUlrich Henn and Claudio C. Milisenda

Handbook of mineralogy (2001)

Stibiotantalite and Hibonite Optic Character

Stibiotantalite and Hibonite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Stibiotantalite and Hibonite 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 Stibiotantalite and Hibonite 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 Red Gemstones

Stibiotantalite Vs Tugtupite

Stibiotantalite Vs Triplite

Stibiotantalite Vs Uvite

Stibiotantalite and Hibonite Transparency

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