Crystal Quartz and Covellite Optical Properties
Luster
Not Available
  
Resinous
  
Pleochroism
Not Available
  
Marked
  
Dispersion
Not Available
  
Not Available
  
Transparency
Not Available
  
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
  
Refractive Index
Not Available
  
1.45-2.62
  
Optic Character
Not Available
  
Not Available
  
Crystal System
Trigonal
  
Hexagonal
  
Birefringence
Not Available
  
Not Available
  
Clarity
Not Available
  
OpaqueAnthony et al
  
Crystal Quartz and Covellite Optic Character
Crystal Quartz and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Crystal Quartz and Covellite 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 Crystal Quartz and Covellite 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.
Crystal Quartz and Covellite Transparency
Similar to their colors, Crystal Quartz and Covellite 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, Crystal Quartz is Not Available while Crystal Quartz is Not Available in appearance.