<?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">carats</topic></authority><related type="other"><topic>troy ounces</topic></related><related type="broader"><topic>size/dimension units for weight</topic></related><variant type="other"><topic>carat</topic></variant> <note xml:lang="en"><![CDATA[ Standard measurement of the weight of gemstones, equal to 0.200 grams. Until 1913, the carat's weight varied in different countries, generally defined around 3.17 grains. ]]></note></mads>