<?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">crown glass</dc:title><dc:identifier>http://AATesaurus.cultura.gencat.cat/aat/getty_en?tema=31375071</dc:identifier><dc:language>en</dc:language><dc:publisher xml:lang="en">Getty Institute</dc:publisher><dcterms:created>2026-03-30 20:41:08</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">disc-blown glass</dcterms:alternative> <dcterms:alternative xml:lang="en">glass, crown</dcterms:alternative> <dc:description xml:lang="en"><![CDATA[ Flat pane glass made by blowing a bubble of glass, transferring it from a blow-pipe to a rod, cutting it open, then rapidly rotating it until, by centrifugal force, it is spread into a flat disk. Can be either small individual panes with so-called bulls-eyes in the centers or large disks that are annealed and cut into pieces. Crown glass is thin and brilliant with a slight convexity and concentric wavy lines. Known to the ancient Romans throughout the Empire; found in windows of medieval cathedrals. ]]></dc:description></metadata>