Topazolite
| Refractive Index : 1.888 + 0.007 – 0.033 |
| Optical Characteristic : SR, ADR |
| Specific Gravity : 3.84 + 0.03 – 0.03 |
| Formula : Ca3Fe+++2(SiO4)3 |
| Crystal System : Cubic |
| Variety/Species : Ugrandite/Andradite |
| Species/Group : Garnet Group |
| Birefringence : None |
| Dispersion : 0.057 |
| Hardness : 6.5 to 7 |
| Toughness : Fair to good |
| Ultrasonic : Uaually safe |
| Steam : Never |
| UV Long : Inert |
| UV Short : Inert to moderate |
| Pleochroism : None |
| Strength : N/A |
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| Pleochroism Colors : None |
| Heat : Avoid abrubt temperature change |
| Acids : Avoid hydrofluoric acid |
| Light : Stable |
| Polish Luster : Vitreous to subadamantine |
| Fracture : Conchoidal to uneven |
| Fracture Luster : Vitreous |
| Clarity Type : II |
| Tones : N/A |
| Saturations : N/A |
| Cause of Color : Iron |
| Enhancements : None |
| Cleavage : None. May show indistinct parting. |
| Color Range : Yellow |
| Transparency : Transparent to translucent |
| Phenomena : Chatoyancy |
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| Separations : Topazolite from- Diamond : Surface condition (possibly), spectrum, magnofication, SG Natural Zircon : Optic character, magnification, spectrum Grossularite (tsavorite) : RI, spectrum, SG, magnification, dispersion Sphalerite : Magnification, cleavage, spectrum, dispersion(possibly), SG Colored CZ : Spectrum, magnification, SG colored YAG : Dispersion, spectrum, magnification, SG |
| Identifying Characteristics and information Yellowish brown “horsetail”inclusions (unique golden asbestos fibers). Moderate to strong dispersion. |
| Spectral Data Strong band at 4430, cutoff at the violet end of spectrum. |
| Trade Names and Misnomers Topazolite |
Tags: topazolite
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