<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375122</termId><termName>onyx glass</termName><termType>PT</termType><termNote><![CDATA[ Term used in the glass trade for a glass made to resemble onyx either by the addition of metal and metallic oxide that impart a silver luster upon heating, or by mixing glass of contrasting colors. ]]></termNote><termCreatedDate>2026-03-30 20:41:09</termCreatedDate><relation><relationType>UF</relationType><termId>31375123</termId><termName>glass, onyx</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344445</termId><termName>glass by technique</termName><termType>PT</termType></relation></term>  </Zthes>