Yuan Jade
| Refractive Index : 1.688 – 1.640 |
| Optical Characteristic : DR, AGG |
| Specific Gravity : 3.34 +0.06 – 0.09 |
| Formula : NaAISi2O6 |
| Crystal System : Monoclinic |
| Variety/Species : Jadeite Jade |
| Species/Group : Pyroxene Group |
| Birefringence : N/A |
| Dispersion : N/A |
| Hardness : 6.5 to 7 |
| Toughness : Exceptional |
| Ultrasonic : Normally Safe |
| Steam : Normally safe |
| UV Long : Inert |
| UV Short : Inert |
| Pleochroism : None |
| Strength : N/A |
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| Pleochroism Colors : None |
| Heat : Fusible |
| Acids : Slightly attacked by acids |
| Light : Stable |
| Polish Luster : Vitreous to greasy |
| Fracture : Granular to splintery |
| Fracture Luster : Dull |
| Clarity Type : N/A |
| Tones : N/A |
| Saturations : N/A |
| Cause of Color : Green-chromium and/or iron |
| Enhancements : None |
| Cleavage : None |
| Color Range : Yellowish green, dark green, green, greenish |
| Transparency : Semitranslucent to Opaque |
| Phenomena : None |
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| Separations : Yuan Jade from- Nephrite : RI, SG, spectrum Idocrase : RI, spectrum Hydrogrossular Garnet : RI, SG, spectrum Serpentine : RI, SG, spectrum Chalcedony : RI, SG, fracture (possibly), spectrum Maw-sit-sit: Appearance, RI |
| Identifying Characteristics and information Semitranslucent to opaque dark green jadeite |
| Spectral Data Strong line at 4375, weak bands at 4500, 4330 |
| Trade Names and Misnomers Yuvan Jade |
Tags: jade, yuvan jade
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