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Boracite
Boracite

Dumortierite
Dumortierite



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Boracite
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Dumortierite

Boracite and Dumortierite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Adamantine
Vitreous
1.2 Pleochroism
None
Strong; X = deep blue or violet; Y = yellow to red-violet or nearly colorless; Z = colorless or very pale blue
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Translucent, Translucent to opaque
1.5 Refractive Index
1.658-1.673
1.669-1.723
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.010-0.011
0.011-0.037
1.9 Clarity
Transparent
Translucent

Boracite and Dumortierite Optic Character

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

Boracite and Dumortierite Transparency

Similar to their colors, Boracite and Dumortierite 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, Boracite is Transparent while Boracite is Transparent in appearance.