<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31411977</termId><termName>gold ruby glass</termName><termType>PT</termType><termNote><![CDATA[ Glass of a deep red color that is produced by a colloidal gold solution prepared by dissolving gold in aqua regia, sometimes including some tin or silver salts. Gold ruby glass was made by the ancient Egyptians and Romans; the ancient technique was lost until rediscovered in 17th-century Germany. Gold was also thought to be anti-toxic and to protect from poison anyone who drank from it.  ]]></termNote><termCreatedDate>2026-03-30 20:50:46</termCreatedDate><relation><relationType>UF</relationType><termId>31411978</termId><termName>glass, gold ruby</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31411979</termId><termName>goldrubinglas</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31411980</termId><termName>rubinglas</termName><termType>ND</termType></relation><relation><relationType>UF</relationType><termId>31411981</termId><termName>ruby glass, gold</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31374989</termId><termName>ruby glass</termName><termType>PT</termType></relation></term>  </Zthes>