Fire Opal and Watermelon Tourmaline Optical Properties

Fire Opal

Watermelon Tourmaline

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1 Optical Properties

1.1 Luster

Not Available

Vitreous

1.2 Pleochroism

AbsentWalter Schumann

Not Available

1.3 Dispersion

None0.02

0.007 1

1.4 Transparency

Transparent, Translucent

TransparentGemdat.org, Management Team (2012)

1.5 Refractive Index

1.370-1.4701.614-1.666

1 3.25

1.6 Optic Character

Not Available

1.7 Crystal System

Amorphous

Not Available

1.8 Birefringence

Not Available0.014-0.040

0 0.296

1.9 Clarity

Transparent

TransparentGemdat.org

Fire Opal and Watermelon Tourmaline Optic Character

Fire Opal and Watermelon Tourmaline optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Fire Opal and Watermelon Tourmaline 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 Fire Opal and Watermelon Tourmaline 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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Fire Opal and Watermelon Tourmaline Transparency

Similar to their colors, Fire Opal and Watermelon Tourmaline 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, Fire Opal is Translucent and Transparent while Fire Opal is Translucent and Transparent in appearance.