How do I identify French gold marks?

French pieces typically feature tiny punch marks known as hallmarks, such as the eagle head for 18ct gold or dog head for platinum, stamped onto the exterior of the band or mount. These tiny symbols require a loupe to inspect properly and indicate the specific standard of metal purity mandated by French assay offices at the time of manufacture.

What is the difference between Edwardian and Art Deco diamond jewellery?

Edwardian pieces rely on platinum and yellow gold to create lace-like garlands, bows, and floral motifs using old-cut diamonds. Art Deco designs shift toward strict geometric shapes, symmetry, and platinum settings that emphasise transitional and old-cut stones in bold configurations.

Are these diamonds certified?

Diamonds in antique items are generally evaluated within their original mounts rather than accompanied by modern laboratory certificates. Carat weights and stone grades are therefore estimated by dimensions and visual assessment while remaining securely set in their historical pieces.

How should I care for antique diamond jewellery?

Regular cleaning with warm soapy water and a soft brush helps maintain the brilliance of the diamonds and clears oils from the metalwork. Avoid harsh ultrasonic cleaners, particularly for pieces containing softer gems like emeralds or pearls that require gentle handling.