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Period and style tradition
Belle Époque and art deco are consistently valued highest within the vintage offerings of this house. Naturalistic mid-century series have their own steady collecting market.
Signature and documentation
Signed pieces typically bear an engraved brand name and a serial number — described at a pattern level. Original box, invoice, and archive entry directly influence the realised price. Verification is done through an independent specialist.
Material and craftsmanship
The use of platinum, old cuts, and the precision of the craftsmanship are independent factors in the appraisal. Late reproductions in white gold are structurally distinct from period work in platinum.
Condition and resetting
Original condition and completeness of stones are consistently valued higher than pieces where parts have been replaced. Professional restoration is less problematic than amateur interventions, provided it is documented.