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Tantalite
Tantalite

Lawsonite
Lawsonite



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Tantalite
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Lawsonite

Tantalite and Lawsonite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Vitreous, Greasy
1.2 Pleochroism
Not Available
Weak
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
TransparentWalter Schumann, Gemstones of the world (2001) More from other references
Not Available
1.5 Refractive Index
2.190-2.457
1.672-1.676
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic
1.8 Birefringence
0.083
0.019-0.021
1.9 Clarity
TransparentWalter Schumann
Not Available

Tantalite and Lawsonite Optic Character

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

Tantalite and Lawsonite Transparency

Similar to their colors, Tantalite and Lawsonite 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, Tantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann while Tantalite is Gemstones of the world (2001) More from other references and TransparentWalter Schumann in appearance.