<?xml version="1.0" encoding="utf-8"?><metadata xmlns:dc="http://purl.org/dc/elements/1.1/"  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:dcterms="http://purl.org/dc/terms/"><dc:title xml:lang="en">Porta Santa marble</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31457560</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 21:03:09</dcterms:created><dcterms:isPartOf xsi:type="dcterms:URI">http://AATesaurus.cultura.gencat.cat/aat/getty_en</dcterms:isPartOf><dcterms:isPartOf xml:lang="en">Tesaurus d&apos;Art i Arquitectura</dcterms:isPartOf><dc:format>text/html</dc:format> <dcterms:alternative xml:lang="en">Claudian stone</dcterms:alternative> <dcterms:alternative xml:lang="en">Portasanta marble</dcterms:alternative> <dcterms:alternative xml:lang="en">marble, Porta Santa</dcterms:alternative> <dcterms:alternative xml:lang="en">marmor Iassense</dcterms:alternative> <dcterms:alternative xml:lang="en">stone, Claudian</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ A purplish red and white clouded stone which may come from either the island of Iasus or the island of Chios. It was supposedly favored by the emperor Claudius in antiquity and was later used in the door jambs of the Porta Santa of St. Peter's in Rome, hence its name. ]]></dc:description></metadata>