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Hardystonite
Hardystonite

Obsidian
Obsidian



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Hardystonite
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Obsidian

Hardystonite and Obsidian Optical Properties

1 Optical Properties
1.1 Luster
Vitreous, Resinous, Greasy
Vitreous
1.2 Pleochroism
Not Available
AbsentWalter Schumann
1.3 Dispersion
NA0.01
Fluorite Optical Properties
0.007 1
1.4 Transparency
Handbook of mineralogy (2001)
Transparent, Translucent
1.5 Refractive Index
1.6721.450-1.550
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
tetragonal
Amorphous
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Handbook of mineralogy (2001)
Transparent

Hardystonite and Obsidian Optic Character

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

Hardystonite and Obsidian Transparency

Similar to their colors, Hardystonite and Obsidian 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, Hardystonite is Handbook of mineralogy (2001) while Hardystonite is Handbook of mineralogy (2001) in appearance.