IR spectra,Raman spectra and electron paramagnetic resonance(EPR)techniques have been found to be useful,fast,non destructive and accurate methods for identification of various types of gemstones (natural gemstones, synthetic gemstones and enhanced and treated gemstones).
It can accurately test the inclusion inside gems and provide the origin and locality information of gems. It has been found to be a useful,fast,non\|destructive and accurate method for identification the gemstones' types(natural gemstones,synthetic gemstones and high quality gemstones).
The research results show that the typomorphic characteristics of minerals can help us to identify not only nature gems and enhancement & treatment ones, but also the locality of some gems.
The spectral analysis techniques have been applied to the gemological study and gemstone identification. IR spectra,Raman spectra and electron paramagnetic resonance(EPR)techniques have been found to be useful,fast,non destructive and accurate methods for identification of various types of gemstones (natural gemstones, synthetic gemstones and enhanced and treated gemstones).
The FT\|Raman spectroscopy has been successfully applied to the gemological Research and gemstone identification.It can accurately test the inclusion inside gems and provide the origin and locality information of gems.It has been found to be a useful,fast,non\|destructive and accurate method for identification the gemstones' types(natural gemstones,synthetic gemstones and high quality gemstones).However,this method has some demerits.
In order to provide basis for identifying gems, the absorption spectra of natural and optimally treated gems were obtained with UV Vis spectrophotometer. The experimental results show that the differences of the spectra between heat treated yellow sapphire, irradiation treated yellow sapphire and natural yellow sapphire are due to their different coloring mechanism and the spectra of dyed ruby, dyed emerald, dyed jadeite and coated jadeite are different from their natural counterparts due to their dyes use...