What does a gold assay actually tell you?
Explore what content, fineness and sample relevance mean in practical terms.
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A practical reading space about assay concepts, representative samples, gemstone examination and laboratory reporting.
Four concise, original guides to help you ask better technical questions.

Explore what content, fineness and sample relevance mean in practical terms.
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How variability, collection and preparation shape the meaning of an analysis.
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Why identity, observable characteristics and origin require different evidence.
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Understand identifiers, reported units, observations and the scope of findings.
Read insightExplore an area of service or describe the specimen you would like to discuss.