<?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">aventurine</topic></authority><related type="other"><topic>aventurine glass</topic></related><related type="broader"><topic>quartz</topic></related><related type="broader"><topic>gemstones by specific type</topic></related><variant type="other"><topic>aventurine quartz</topic></variant><variant type="other"><topic>Chinese jade</topic></variant><variant type="other"><topic>Indian jade</topic></variant> <note xml:lang="en"><![CDATA[ A quartz mineral that contains shiny flecks of mica. Aventurine is usually green but can also be orange or reddish-brown. It is sometimes used as an inexpensive alternative to jade. Most aventurine comes from Russia, India, and Brazil. A synthetic imitation, "aventurine glass," is used for costume jewelry under the name "goldstone." Aventurine is also sometimes incorrectly called "Chinese jade" or "Indian jade." ]]></note></mads>