The GRS Reference Collection
Over the last 30 years, GRS has invested a substantial amount of its efforts and revenue towards appropriating gemstone reference samples from various mining areas worldwide. Exceeding well over 40,000 single samples and growing, it is truly a unique collection of gemmological knowledge. Some of the pieces in the collection can be considered museum quality.
This extensive sample library is paired with the proprietary evaluation and interpretation expertise of Dr. A. Peretti, which has been compiling it over the past three decades, working as a hands-on gemmologist and research scientist. Analytical testing of the samples with state-of-the-art equipment, including highly sensitive spectrometers and the extensive study of inclusions and other gemmological properties, form the backbone of GRS’ comprehensive origin determination and treatment detection abilities.
«30 years of collecting over 40,000 reference samples creates confidence and pride. It is an honour to be among the best gemstone testing laboratories in the world.»
Dr. A. Peretti
Though widely believed that analytical testing methods provide the single most conclusive information towards origin determination, they are weak in conclusion if the data sets cannot be compared with an extensive reference database. Key samples are distributed throughout all our laboratory locations; however, the bulk can be found in our headquarter in Meggen, Switzerland, where most of the research activities are conducted.
Below examples of interesting specimens of the GRS Reference Collection:
|
|
|
|
|
|
© 2023, GRS GemResearch Swisslab AG