<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31375336</termId><termName>yttrium-aluminium-garnet</termName><termType>PT</termType><termNote><![CDATA[ A synthetic gemstone that has a structure same as that of a garnet, but has no chemical counterpart in nature. It has been produced since 1969 in a range of colours, but especially as a colourless stone to simulate a diamond. ]]></termNote><termCreatedDate>2026-03-30 20:41:13</termCreatedDate><relation><relationType>BT</relationType><termId>31344471</termId><termName>garnet</termName><termType>PT</termType></relation></term>  </Zthes>