×

Siderite
Siderite

Phenakite
Phenakite



ADD
Compare
X
Siderite
X
Phenakite

Siderite and Phenakite Optical Properties

1 Optical Properties
1.1 Luster
Pearly
Vitreous
1.2 Pleochroism
Not Available
Distinct: colorless orangy-yellowHerve Nicolas Lazzarelli
1.3 Dispersion
NA0.02
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.633-1.8751.650-1.695
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Trigonal
1.8 Birefringence
0.2420.016
Achroite
0 0.296
1.9 Clarity
Transparent
TransparentUlrich Henn and Claudio C. Milisenda

Siderite and Phenakite Optic Character

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

Siderite and Phenakite Transparency

Similar to their colors, Siderite and Phenakite 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, Siderite is Translucent and Transparent while Siderite is Translucent and Transparent in appearance.