How can jade be identified chemically?
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Chemical composition of jade: sodium aluminum silicate—NaAl[Si2O6]; it often contains trace elements such as Ca, Cr, Ni, Mn, Mg, Fe, etc. CAS: 1344-00-9
Jade is a mineral crystal; if its chemical composition is to be determined, chemical methods can be used. However, to determine its authenticity or quality, X-ray diffraction or other methods for analyzing mineral crystals are required. It was said upstairs that chromatography would be used, but I’m not sure which type of chromatography Gas phase? Liquid phase? Thin layer?
XRD is a good method; the crystal forms can be identified just by comparing them
So it can be done this way. Are you a specialist in appraisal?
No matter how beautiful a gemstone may be, it is still just a stone; yet because of its cultural significance, it gains a special meaning, and those who appreciate it regard it as a treasure.
Are there any special shapes or features?
Each chemical substance has a different crystal form, specifically due to different lattice parameters. The standard lattice parameters for jade can be found in databases; by comparing the lattice parameters of the sample with those of standard jade, an inspection can be carried out
XRD non-destructive testing is the fastest method; it involves comparing the pattern with that of genuine jade to determine the degree of overlap in the diffraction peaks.
Can’t one know the methods of appraisal if they are not engaged in appraisal? This is a routine identification; identifying this type of stone is much simpler than identifying certain ores.