<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375104</termId><termName>aventurine glass</termName><termType>PT</termType><termNote><![CDATA[ Synthetic imitation of aventurine quartz crystals. Goldstone is made by embedding metallic flakes in quartz glass. It is used in costume jewelry. It is a translucent glass flecked with metallic particles to imitate the appearance of brownish aventurine quartz.  ]]></termNote><termCreatedDate>2026-03-30 20:41:09</termCreatedDate><relation><relationType>UF</relationType><termId>31375105</termId><termName>aventurine</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375106</termId><termName>glass, aventurine</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375107</termId><termName>gold-stone</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375108</termId><termName>goldstone</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31375109</termId><termName>goldstone glass</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344445</termId><termName>glass by technique</termName><termType>PT</termType></relation><relation><relationType>RT</relationType><termId>31375358</termId><termName>aventurine</termName><termType>PT</termType></relation></term>  </Zthes>