Instruments used to determine the purity and authenticity of gold vary in complexity, ranging from traditional touchstones and acid tests to advanced spectroscopic devices like X-ray fluorescence (XRF) analyzers and fire assay equipment. These technologies provide accurate measurements of gold content, identifying other metals and elements present within a sample. For instance, XRF analyzers can quickly non-destructively analyze jewelry, coins, and other items, while fire assay, a more traditional method, offers unparalleled accuracy for determining gold fineness in dor bars.
Accurate gold analysis is crucial for fair trade, jewelry appraisal, and industrial applications. Historically, inaccurate or subjective assessment methods led to disputes and undervaluation. Modern analysis tools ensure transparency and trust in transactions, enabling precise valuation and quality control in industries like gold mining and refining. The evolution of these technologies has contributed significantly to the standardization of gold trading and improved quality control processes.