TGL Laboratory is able to certify gemstones following ISO/IEC 17025 and GIT standards, and has access to an extensive array of industry-standard gemological instruments ranging from the basic, to the advanced, the latter ensuring a high degree of accuracy and non-destructive assessment.
Examples of our instrumentation includes:
Energy Dispersive X-ray Fluorescence Spectrometer (EDXRF)
This instrument is used to analyze elemental compositions and to measure the concentration of chemical elements in gemstones. It provides important information for determination of origin and detection of some treatments, such as the addition of lead glass to rubies.
Ultraviolet-Visible Near-Infrared Spectrophotometer (UV-VIS-NIR)
This instrument is used to measure the absorption spectrum of gemstones, information which can be used to identify colored gemstones, the color origin of colored diamonds, treatments in gemstones, and their geographical origin.
Fourier-Transform Infrared Spectrometer (FTIR)
This instrument is used to analyze the structures of molecular substances which enables identification, determination of enhancement of specific materials such as polymer impregnation in jade and emerald, and also to distinguish natural from synthetic gemstones.
The 785 Laser Raman Spectrometer
This instrument is used to further classify and authenticate gemstones or provide additional insights. It can be used to examine loose, mounted, and rough stones.