Seals and Intaglios

Physical identification

Cylinder seals, stamp seals, engraved gems and signet devices. Record dimensions, weight, manufacture, surfaces, repairs, labels, mounts and inscriptions before cleaning or treatment.

Key cautions

• Study the object and its impression.
• Ancient stones can be modernly recut.
• Mountings can obscure edges, drilling and repairs.

Provenance and lawful movement

Ask when the object first appeared outside the ground, who owned it, where it was located, how it left its likely source country and whether the seller warrants good title in writing.

Authenticity and conservation

Condition and authenticity can be intertwined. Artificial deposits, modern joins and restored surfaces may disguise manufacture. No single photograph, certificate or test proves the complete history of an object.