<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375358</termId><termName>aventurine</termName><termType>PT</termType><termNote><![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." ]]></termNote><termCreatedDate>2026-03-02 20:54:06</termCreatedDate><relation><relationType>UF</relationType><termId>31375359</termId><termName>Chinese jade</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375360</termId><termName>Indian jade</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375361</termId><termName>aventurine quartz</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344506</termId><termName>quartz</termName><termType>PT</termType></relation><relation><relationType>BT</relationType><termId>31376754</termId><termName>gemstones by specific type</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31375104</termId><termName>aventurine glass</termName><termType>PT</termType></relation></term>  </Zthes>