Read an XRF report as a measurement of a particular sample area under particular conditions. It is not automatically a certificate describing every part of the jewelry.
Identify what the report belongs to
Start with the sample identifier, date, instrument and operator information. Make sure the report can be connected to the actual piece. A photograph or description is useful when several similar items are being handled.
Ask where the measurement was taken. A ring shank, solder joint and decorative component may raise different questions. Without that location, a precise-looking table can be difficult to interpret later.
Understand the reported units
An elemental result may be expressed as a mass percentage, while a karat indication describes a gold proportion on a 24-part scale. As arithmetic, 75% gold corresponds to 18 parts out of 24. That conversion does not establish the measurement’s accuracy or make a surface result representative of the entire item.
Read any uncertainty, detection-limit and warning fields using the instrument’s documentation. A displayed zero may not carry the same meaning as a demonstrated absence. Do not invent a tolerance from the number of decimal places.
Ask about the measurement conditions
Check which calibration or analytical method was used and whether the sample geometry was appropriate. Ask what the software includes in its reported total and whether any elements are omitted or normalized.
If two locations disagree, preserve both observations. Averaging them casually can hide construction differences. The next useful step may be another measurement or a different method, depending on the item and purpose.
Use the report in a buying decision
Keep weight, observed condition and other identification evidence separate from the elemental report. An offer based on a piece’s estimated gold content involves more than copying a single percentage into a calculator.
Gold Kings recommends asking the operator to explain what the result supports and what remains uncertain. For equipment buyers, request a sample report during the demonstration and make sure you can understand and retain it. This guide uses illustrative arithmetic; it does not present a Gold Kings laboratory report or a test of the linked analyzer.
Explore the relevant products
Check the exact model, seller, package contents and current offer on the linked product page before ordering.
Sources and further reading
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As an Amazon Associate I earn from qualifying purchases. The product pages linked in this article contain Amazon affiliate links. This guide is based on published specifications and practical buying considerations, not a controlled hands-on product test.