Laboratory Equipment at GLA

Our lab is equipped with state-of-the-art gemmological equipment. A competent team of specialists uses it to analyse gemstones and their treatments.

Standard Gemmological Equipment and Instruments

  • Refractometer (to determine the refraction of light)

  • Polariscope (to determine single or birefringent gemstones)

  • Special lighting in laboratory premises (standardised natural light of 6500 K)

  • calibrated precision scales, hydrostatic scales

  • precise measuring instruments for set or loose diamonds and gemstones

  • Horizontal and vertical microscopes with various illuminations

  • different colour filters

  • Colour systems for the exact determination of colours for gemstones and diamonds

  • master stone set for diamond color grading

  • extensive literature

Scientific equipment and instruments

  • Leica high-definition precision microscope with reflected light, polarized light and transmitted light, as well as software for measuring and photographing inclusions

  • Fourier Transform Infrared Spectrometry (FTIR) for the analysis of diamonds and gemstones

  • Raman spectroscopy to analyse materials

  • Photoluminescence spectroscopy (PL) for the detection of gemstone and diamond treatments

  • Fluorescence spectrometry especially for the analysis of small, set diamonds

  • UV-Vis-NIR spectrometry (spectrometry in the ultraviolet range, visible and near infrared)

  • Upgraded for testing at 77 Kelvin (minus 196 ° C) using liquid nitrogen for UV-Vis-NIR spectrometry and PL spectrometry

  • Small spot energy disersive X-ray fluorescence (ED-XRF) spectrometer for precious metal testing and gemstone analysis

We are happy to answer your questions about our equipment or our certification process in Vienna. Call us:  +43 1 5339099.

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