Variscite
| Refractive Index : 1.590 – 1.560 (+ 0.003 – 0.006) |
| Optical Characteristic : DR, AGG |
| Specific Gravity : 2.50 (- 0.10 + 0.10) |
| Formula : AIPO4.2(H2O) |
| Crystal System : Orthorhombic |
| Variety/Species : All |
| Species/Group : Variscite |
| Birefringence : Not detectable |
| Dispersion : N/A |
| Hardness : 3.5 to 5 |
| Toughness : Poor |
| Ultrasonic : Never |
| Steam : Never |
| UV Long : Inert to weak |
| UV Short : Inert to weak |
| Pleochroism : None |
| Strength : N/A |
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| Pleochroism Colors : None |
| Heat : Sensitive |
| Acids : Attacked by acids and/or chemicals |
| Light : Stable |
| Polish Luster : Waxy to vitreous |
| Fracture : Granular to uneven |
| Fracture Luster : Dull |
| Clarity Type : N/A |
| Tones : N/A |
| Saturations : N/A |
| Cause of Color : Chromium and iron |
| Enhancements : None |
| Cleavage : Good in 1 direction |
| Color Range : Light to medium, yellowish green, bluish green. Often mottled or veined with yellow to brown matrix. |
| Transparency : Translucent to opaque |
| Phenomena : None |
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| Separations : Variscite from- Natural Turquoise Gemstone : color filiter, RI, appearance, spectrum, SG(possibly)Jadeite : RI, SG, spectrum, appearanceGlass : fracture luster, magnification, RI(possibly), spectrum(poss)Plastic : SG, magnification, RI(possibly), spectrum(possibly)Serpentine : RI(possibly), spectrum, color filter, appearance Malachite : appearance, RI, SG |
| Identifying Characteristics and information Yellow to brown matrix, stone appears pinkish through the color filter |
| Spectral Data Strong line at 6880. Weaker line at 6500 |
| Trade Names and Misnomers Amatrix Australian Jade (M) Australian Turquoise (M) Barrandite Bolivarite California Turquoise (M) Lucinite Nevada Turquoise (M) Sabalite Strengite Amatrice
Utahlite
Trainite
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Tags: Amatrice, Amatrix, Australian Jade, Australian Turquoise, Barrandite, Bolivarite, California Turquoise, Lucinite, Nevada Turquoise, Sabalite, Strengite, Trainite, Utahlite, Variscite
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Turquoise Gemstone Properties and Information — December 24, 2009 @ 12:12 PM
[...] Variscite : color filter, RI, appearance, spectrum, SG(possibly) [...]
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