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Phosphosiderite
Phosphosiderite

Malachite
Malachite



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Phosphosiderite and Malachite Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Adamantine, Vitreous, Silky, Fibrous
1.2 Pleochroism
Pale rose-red carmine-red colorlessAnthony et al
Not Available
1.3 Dispersion
Albite Optical ..
Not Available
Rank: N/A (Overall)
None
Rank: N/A (Overall)
Fluorite Optical Properties
1.4 Transparency
Transparent
Opaque
1.5 Refractive Index
1.692-1.739
1.655-1.909
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
0.240
0.254
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Phosphosiderite and Malachite Optic Character

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

Phosphosiderite and Malachite Transparency

Similar to their colors, Phosphosiderite and Malachite 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, Phosphosiderite is Transparent while Phosphosiderite is Transparent in appearance.