Yellow Gemstones

TRANGSUCVN.COM 2014-06-15 442 lượt xem

     

    Yellow Gemstones

     

     

     

    Gemstone Crystal System Density Hardness Refractive index Treatments
    agateAgate microcrystalline 2.66 6.5-7.0 1.544-1.553 dying
    amberAmber amorphous 1.08 2.0-2.5 1.54 heating, oiling, reconstitution
    berylBeryl hexagonal 2.72 7.5-8.9 1.577-1.583 heat, radiation, fracture filling, oiling
    chalcedonyChalcedony microcrystalline 2.66 7 1.544-1.553 dying
    chrysoberylChrysoberyl orthorhombic 3.72 8.5 1.746-1.755 heat, radiation
    citrineCitrine hexagonal 2.66 7.0 1.544-1.553 heat
    yellow diamondDiamond cubic 3.52 10 2.417 radiation, drilling, fracture filling
    jadeiteJadeite microcystalline 3.34 6.5-7.0 1.660-1.680 dying
    opalOpal amorphous 2.15 5.0-6.5 1.450 fracture filling
    sapphireSapphire hexagonal 4.00 9 1.762-1.770 heat, fracture filling
    smoky quartzSmoky Quartz hexagonal 2.66 7.0 1.544-1.553 none
    spinelSpinel cubic 3.60 8 1.718 none
    tigereyeTiger-eye microcrystalline 2.64-2.71 7.0 1.540-1.550 none
    topazTopaz orthorhombic 3.53 8.0 1.619-1.627 blue is irradiated
    tourmalineTourmaline trigonal 3.06 7.0-7.5 1.624-1.644 heat
    zirconZircon tetragonal 4.00 6.50 1.810-1.815 heat

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