An antique jewel combines materials, workmanship, age and later repair. Test what can be tested, document what can be documented and label interpretation as interpretation.
Identify every stone
One mounting can contain natural gems, early synthetics, simulants and later replacements. Important stones may warrant independent laboratory identification.
Ask about treatment
Heat, filling, oil, diffusion and other treatments can affect appearance, care and value. Ask what was detected and what care it requires.
Inspect the complete jewel
Check prongs, bezels, hinges, clasps, solder seams, enamel, engraving and metal thickness. Resolve loose or worn components before regular wear.
Separate age from style
Period-inspired jewellery is also made today. Construction, hallmarks, materials, cutting style and ownership records can support dating.
Use provenance carefully
Family stories add context. Invoices, wills, catalogues, photographs and signed records add evidence. Keep the two categories separate when the chain is incomplete.
Read the report for the question it answers
A coloured-stone report can describe material and detectable treatment. Some reports add an opinion on geographic origin. Dating the jewel and tracing its ownership call for documentary and construction evidence.
Photograph before work begins
Record the front, back, sides, hallmarks, damaged areas and important stones before cleaning or repair. The owner and workshop then share the same starting point.
GIA explains its coloured-stone identification and origin reports. For antique diamonds, use our condition guide beside the laboratory report.