How do I care for an old cushion diamond ring?

These historic pieces require gentle cleaning with warm soapy water and a soft brush to remove everyday oils. Avoid harsh ultrasonic cleaners that might compromise fragile settings or delicate claw work. Regular inspection by a jeweller ensures that the prongs holding the hand-cut diamond remain secure and tight against the metal mount.

Are old cushion diamonds certified?

Many pieces come accompanied by independent gemological reports detailing the diamond's colour, clarity, and approximate carat weight. These certificates provide an objective assessment of the stone's historic characteristics. Uncertified pieces rely on the established expertise of the dealer and the physical evidence of the mounting style and wear.

What is the difference between an old mine cut and a cushion cut?

An old mine cut specifically refers to nineteenth-century stones with steep crowns, smaller tables, and deep pavilions. They share the rounded rectangular silhouette of cushion cuts but possess a distinct internal geometry. Standard cushion cuts span a broader timeline into the mid-century eras with varying facet arrangements.

Can these rings be resized?

Most gold and platinum mountings can be adjusted by a skilled bench jeweller experienced in antique jewellery. The complexity depends on the presence of side stones or intricate gallery work along the band. Care must be taken to preserve hallmarks and delicate metal details during the resizing process.