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Prase Opal
Prase Opal

Howlite
Howlite



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Prase Opal
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Howlite

Prase Opal and Howlite Optical Properties

1 Optical Properties
1.1 Luster
Not Available
Vitreous
1.2 Pleochroism
Not Available
NilArthur Thomas
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Translucent
Gemmological Tables (2004) More from other references
1.5 Refractive Index
1.370-1.4701.583-1.608
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Not Available
monoclinic
1.8 Birefringence
Not Available0.019
Achroite
0 0.296
1.9 Clarity
Transparent
Gemmological Tables (2004) More from other references

Prase Opal and Howlite Optic Character

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

Prase Opal and Howlite Transparency

Similar to their colors, Prase Opal and Howlite 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, Prase Opal is Translucent and Transparent while Prase Opal is Translucent and Transparent in appearance.