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Alexandrite
Alexandrite

Turquoise
Turquoise



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Alexandrite
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Turquoise

Alexandrite and Turquoise Optical Properties

1 Optical Properties
1.1 Luster
Vitreous
Waxy
1.2 Pleochroism
Not Available
Weak
1.3 Dispersion
NANone
Fluorite Optical Properties
0.007 1
1.4 Transparency
Transparent, Transparent to nearly opaque
Translucent, Opaque
1.5 Refractive Index
1.739-1.7701.610-1.650
Agate Opal
1 3.25
1.6 Optic Character
Biaxial/+
Not Available
1.7 Crystal System
Orthorhombic
Triclinic
1.8 Birefringence
0.007-0.0100.040
Achroite
0 0.296
1.9 Clarity
Transparent
Translucent

Alexandrite and Turquoise Optic Character

Alexandrite and Turquoise optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Alexandrite and Turquoise 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 Alexandrite and Turquoise 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. Alexandrite has Biaxial/+ character.

Alexandrite and Turquoise Transparency

Similar to their colors, Alexandrite and Turquoise 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, Alexandrite is Transparent and Transparent to nearly opaque while Alexandrite is Transparent and Transparent to nearly opaque in appearance.