NOBILITH Academy
Gem Lab
Instruments and methods of gemmological examination.
- Gemmological microscopeThe most important instrument in the laboratory: under the microscope, inclusions, growth features and signs of treatment become visible.Read more
- RefractometerThe refractometer measures how strongly a stone bends light. This allows many materials to be narrowed down quickly – within clear limits.Read more
- PolariscopeBetween two crossed polarising filters a stone reveals how it refracts light. A simple instrument with meaningful results.Read more
- SpectroscopeThe hand spectroscope splits the light passing through a stone and shows dark absorption lines – often a clue to colour-causing elements.Read more
- Ultraviolet examinationUnder ultraviolet light some stones glow while others stay dark. The reaction supplements other findings – on its own it is not a reliable test.Read more
- UV-Vis-NIR spectroscopyThe spectrometer measures which wavelengths a stone absorbs from the ultraviolet to the near infrared. The curve explains colour and offers clues to treatments.Read more
- FTIR spectroscopyFTIR measures how a stone absorbs infrared light. This helps to identify materials, detect fillings and classify diamonds.Read more
- Raman spectroscopyWith a laser, minerals and even tiny inclusions can be identified without damage. Raman spectroscopy is now a standard tool.Read more
- XRF and EDXRFX-ray fluorescence analysis shows which chemical elements are present in a stone – quickly, non-destructively and close to the surface.Read more
- LA-ICP-MSA laser vaporises a tiny amount of material, which is then analysed for trace elements. The method is extremely sensitive – and minimally destructive.Read more