Bowenite and Apophyllite Optical Properties

Bowenite

Apophyllite

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1 Optical Properties

1.1 Luster

Waxy, Silky, Resinous, Greasy

Vitreous, Pearly

1.2 Pleochroism

Not Available

Dichroic (colorless)

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentHerve Nicolas Lazzarelli, Blue Chart Gem Identification (2010)

Transparent, Translucent

1.5 Refractive Index

1.530-1.5751.530-1.543

1 3.25

1.6 Optic Character

Not Available

Uniaxial/-

1.7 Crystal System

Not Available

tetragonal

1.8 Birefringence

Not Available0.000-0.003

0 0.296

1.9 Clarity

TranslucentHerve Nicolas Lazzarelli

Transparent

Bowenite and Apophyllite Optic Character

Bowenite and Apophyllite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Bowenite and Apophyllite 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 Bowenite and Apophyllite 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. Apophyllite has Uniaxial/- character.

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Bowenite and Apophyllite Transparency

Similar to their colors, Bowenite and Apophyllite 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, Bowenite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli while Bowenite is Blue Chart Gem Identification (2010) and TranslucentHerve Nicolas Lazzarelli in appearance.