What is an Assayer and What Do They Do?

An assayer is a person who tests or assays the quality and purity of precious metals, such as gold, silver, and platinum. The term can also refer to the process of testing or assaying these metals.

In the context of mining and refining precious metals, an assayer's role is to determine the weight and purity of the metal being processed. This involves analyzing samples of the metal using various techniques, such as fire assay, atomic absorption spectroscopy (AAS), or X-ray fluorescence (XRF). The assayer then provides a report detailing the weight and purity of the metal, which is used to determine the value of the material and to ensure that it meets the required standards for sale or further processing.

In addition to testing the purity of precious metals, an assayer may also be responsible for testing other materials, such as ores, concentrates, and refined metals, to determine their composition and value. The assayer's findings are critical to the mining and refining industries, as they help to ensure that the materials being processed meet the required standards for quality and purity.