Occurrence of Attributes in Original Text

The text related to the cultural heritage 'Villa Adriana (Tivoli)' has mentioned 'Steel' in the following places:
Occurrence Sentence Text Source
A steel engraving depicting Augustus' now lost painting of the death of Cleopatra VII in encaustic, which was discovered at Emperor Hadrian's Villa (near Tivoli, Italy) in 1818;[6] she is seen here wearing the golden radiant crown of the Ptolemaic rulers,[7] an Isis knot (corresponding to Plutarch's description of her wearing the robes of Isis),[8] and being bitten by an asp in an act of suicide.