Ancient Roman porphyry architectural cornerstone - 20.2×7×9 cm

Description
Ancient Roman porphyry architectural cornerstone - 20.2×7×9 cm
1st-3rd century A.D. - Italy

An antique architectural fragment carved out of purple-red "Egyptian" or imperial porphyry in the form of a rectangular cornerstone/

The term porphyry is from Ancient Greek : "πορφύρα" or porphyra and means "purple". Purple was the color of royalty, and the "imperial porphyry" was a deep purple igneous rock with large crystals of plagioclase. Some authors claimed the rock was the hardest known in antiquity. The emperor Nero had a bad made out of porphyry, which is now in the collection of the Vatican Museum.

Roman. 1st-3rd century A.D.

Dimensions: H 20.2cm ; L 9cm ; W 7cm

Provenance: art & antique trade (BE)

Lot details
Culture
Ancient Roman
Material
porphyry
Object
architectural cornerstone
Dimensions
20.2×7×9 cm
Century/ Timeframe
1st-3rd century A.D.
Origin
Italy
Condition
Good Condition, See Photo
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