Non-destructive Gemstone identification with easy and reliable Raman spectroscopy

We trust a highly skilled jeweller to identify and evaluate gemstones with the naked eye, but the scientific study is within reach for nearly anyone else to identify an unknown gemstone, or verify the authenticity of a known gemstone.

The magic wand – Raman Gemstone Identification System

As a non-destructive technique that requires no sample preparation, Raman spectroscopy is the perfect tool to determine the identification of synthetic or natural gemstones, identify impurities, and research the origin of colour in gemstones. Raman technology, which can be used on mounted gems and pieces of jewellery, is capable of providing gemstone spectra for all classes, including borates, carbonates, halides, native elements, oxides, phosphates, silicates, sulfates and sulfides.

The Gem Ram™ is a lightweight, portable Raman spectrometer dedicated to both the verification of known gemstones as well as the identification of unknown gemstones. The Gem Ram utilizes a spectrum stabilized 785nm diode laser and high resolution TE cooled spectrometer to provide unrivalled performance and repeatability. It comes complete with a fiber optic probe, X-Y-Z positioning stage, all in a convenient carrying case.

Gem Ram comes equipped with B&W Tek’s GemID™ identification software, powered by Gem Expert’s spectral library of greater than 450 different gemstones, as well as unlimited space for user-defined spectra that can be added at any time. Different types of gemstones worldwide are also available in the Gem Expert library.

 This compact, lightweight instrument unit can be carried in a convenient and durable carrying case which makes it a perfect solution for gemstone identification and verification not only in the lab, but also in the field or point of sale location.

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Blog Author D. Manikandan, Product Manager - Spectroscopy, Metrohm India Private Limited