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Danburite
Danburite

Pearl
Pearl



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Danburite
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Pearl

Danburite and Pearl Optical Properties

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1 Optical Properties
1.1 Luster
Vitreous, Greasy
Pearly
1.2 Pleochroism
Weak: pale yellow yellow
AbsentWalter Schumann
1.3 Dispersion
0.02None
Fluorite Optical Properties
0.007 1
1.4 Transparency
Gemmological Tables (2004) More from other references
Translucent, Opaque
1.5 Refractive Index
1.627-1.6391.52-1.66
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.0060.156
Achroite
0 0.296
1.9 Clarity
TransparentUlrich Henn and Claudio C. Milisenda
Translucent

Danburite and Pearl Optic Character

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

Danburite and Pearl Transparency

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