<?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">yttrium-aluminium-garnet</topic></authority><related type="broader"><topic>garnet</topic></related> <note xml:lang="en"><![CDATA[ A synthetic gemstone that has a structure same as that of a garnet, but has no chemical counterpart in nature. It has been produced since 1969 in a range of colours, but especially as a colourless stone to simulate a diamond. ]]></note></mads>