<?xml version="1.0" encoding="utf-8"?><mads xmlns="http://www.loc.gov/mads/" xmlns:mods="http://www.loc.gov/mods/v3" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/mads/
mads.xsd"><authority><topic authority="http://AATesaurus.cultura.gencat.cat/aat/getty_en">flint glass</topic></authority><related type="narrower"><topic>paste</topic></related><related type="other"><topic>crystal</topic></related><related type="broader"><topic>lead glass</topic></related><variant type="other"><topic>Bohemian crystal</topic></variant><variant type="other"><topic>flint-glass</topic></variant><variant type="other"><topic>glass, flint</topic></variant> <note xml:lang="en"><![CDATA[ A brilliant lustrous glass made from a composition of lead oxide, sand, and alkali. It is often used in lenses and prisms because of its high index of refraction. This term is sometimes used to refer more generally to "crystal (lead glass)." ]]></note></mads>