Crystal Quartz and Danburite Optical Properties
Luster
Not Available
Vitreous, Greasy
Pleochroism
Not Available
Weak: pale yellow yellow
Transparency
Not Available
Gemmological Tables (2004) More from other references
Refractive Index
Not Available
1.627-1.639
Optic Character
Not Available
Biaxial/+
Crystal System
Trigonal
Orthorhombic
Birefringence
Not Available
0.006
Clarity
Not Available
TransparentUlrich Henn and Claudio C. Milisenda
Crystal Quartz and Danburite Optic Character
Crystal Quartz and Danburite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Crystal Quartz and Danburite 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 Danburite 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. Danburite has Biaxial/+ character.
Crystal Quartz and Danburite Transparency
Similar to their colors, Crystal Quartz and Danburite 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.