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Lawsonite
Lawsonite

Holmquistite
Holmquistite



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Holmquistite

Lawsonite and Holmquistite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Greasy
Vitreous
1.2 Pleochroism
Weak
Strong in shades of violet when dark-colored.Anthony et al
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
Not Available
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Not Available
Transparent
1.5 Refractive Index
1.672-1.676
1.622-1.666
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Orthorhombic
Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma
1.8 Birefringence
0.019-0.021
Not Available
1.9 Clarity
Not Available
Transparent

Lawsonite and Holmquistite Optic Character

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

Lawsonite and Holmquistite Transparency

Similar to their colors, Lawsonite and Holmquistite 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, Lawsonite is Not Available while Lawsonite is Not Available in appearance.