<?xml version="1.0" encoding="utf-8"?><!DOCTYPE Zthes SYSTEM "http://zthes.z3950.org/xml/zthes-05.dtd">  <Zthes><term><termId>31486305</termId><termName>blue diamond</termName><termType>PT</termType><termNote><![CDATA[ Diamond that is colored blue by trace impurities of boron within the crystalline lattice structure; belong to a subcategory of diamonds called fancy color diamonds, the generic name for diamonds that exhibit intense color ]]></termNote><termCreatedDate>2026-03-30 20:41:13</termCreatedDate><relation><relationType>UF</relationType><termId>31486306</termId><termName>blue diamonds</termName><termType>ND</termType></relation><relation><relationType>BT</relationType><termId>31344463</termId><termName>diamond</termName><termType>PT</termType></relation></term>  </Zthes>