Peridot and Hematite Optical Properties

Peridot

Hematite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous, Greasy

Not Available

1.2 Pleochroism

Weak: yellow-green green (colorless)Herve Nicolas Lazzarelli

O = brownish red; E = yellowish red

1.3 Dispersion

0.02NA

0.007 1

1.4 Transparency

Transparent

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

1.5 Refractive Index

1.64-1.692.690-3.220

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Orthorhombic

Trigonal

1.8 Birefringence

0.0360.280

0 0.296

1.9 Clarity

Transparent

OpaqueHerve Nicolas Lazzarelli

Peridot and Hematite Optic Character

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

Peridot Vs Citrine

Peridot Vs Hackmanite

Peridot Vs Garnet

Peridot and Hematite Transparency

Similar to their colors, Peridot 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, Peridot is Transparent while Peridot is Transparent in appearance.