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

  • DiamondView™ fluorescence microscope for the analysis of natural and synthetic diamonds and their treatments

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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