dendritic agate and Holmquistite Optical Properties

dendritic agate

Holmquistite

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

Not Available

Strong in shades of violet when dark-colored.Anthony et al

1.3 Dispersion

NANA

0.007 1

1.4 Transparency

TranslucentWalter Schumann, Gemstones of the world (2001)

Transparent

1.5 Refractive Index

Not Available1.622-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Not Available

Orthorhombic Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: P nma

1.8 Birefringence

Not AvailableNot Available

0 0.296

1.9 Clarity

TranslucentWalter Schumann

Transparent

dendritic agate and Holmquistite Optic Character

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

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dendritic agate and Holmquistite Transparency

Similar to their colors, dendritic agate 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, dendritic agate is Gemstones of the world (2001) and TranslucentWalter Schumann while dendritic agate is Gemstones of the world (2001) and TranslucentWalter Schumann in appearance.