Jasper and Bertrandite Optical Properties

Jasper

Bertrandite

Add ⊕

1 Optical Properties

1.1 Luster

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

none.

1.3 Dispersion

NoneNA

0.007 1

1.4 Transparency

Opaque

TransparentAnthony et al, Handbook of mineralogy (2001)

1.5 Refractive Index

1.5401.583-1.614

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Trigonal

Orthorhombic Pyramidal H-M Symbol (mm2) Space Group: Ccm21

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

OpaqueHerve Nicolas Lazzarelli

TransparentAnthony et al

Jasper and Bertrandite Optic Character

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

Jasper Vs Lehsunia

Jasper Vs Turquoise

Jasper Vs Peridot

Jasper and Bertrandite Transparency

Similar to their colors, Jasper and Bertrandite 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, Jasper is Opaque while Jasper is Opaque in appearance.