{"id":360946,"date":"2025-11-07T00:16:18","date_gmt":"2025-11-07T00:16:18","guid":{"rendered":"https:\/\/www.europesays.com\/us\/360946\/"},"modified":"2025-11-07T00:16:18","modified_gmt":"2025-11-07T00:16:18","slug":"florentine-diamond-letter-of-authenticity","status":"publish","type":"post","link":"https:\/\/www.europesays.com\/us\/360946\/","title":{"rendered":"\u2018Florentine Diamond\u2019 Letter of Authenticity"},"content":{"rendered":"<p>                  <img loading=\"lazy\" decoding=\"async\" class=\"g-doc-image lazyload\" src=\"https:\/\/static01.nyt.com\/packages\/flash\/multimedia\/ICONS\/transparent.png\" alt=\"Page 1 of 1\" aria-describedby=\"page-1-text\" data-src=\"https:\/\/www.europesays.com\/us\/wp-content\/uploads\/2025\/11\/output-1.png\" width=\"1700\" height=\"2200\"\/><\/p>\n<p id=\"page-1-text\" class=\"g-doc-text\">K.U.K HOF-U. KAMMER- JUWELIER U. GOLDSCHMIED&#13;<br \/>\nA.E.K\u00d6CHERT&#13;<br \/>\n&#13;<br \/>\nSEIT 1814&#13;<br \/>\n&#13;<br \/>\nOctober 21st 2025&#13;<br \/>\n&#13;<br \/>\nResults of the examination of the &#8216;Florentine Diamond&#8217;,&#13;<br \/>\n&#13;<br \/>\nThe &#8216;Florentine Diamond&#8217; is loose, which means that it was removed from its setting at some point in the past. The hat pin in which it was set has been preserved in four fragments: first, its setting, into which the stone fits exactly, and then three separate parts with old-cut diamonds. When assembled, these four parts correspond exactly to the historical photograph of the hat pin with the &#8216;Florentine Diamond&#8217;.&#13;<br \/>\n&#13;<br \/>\nIts weight was determined to be 137.17 carats using a mobile carat scale (with a possible deviation of up to 0.02 ct) &#8211; this corresponds approximately to historical sources, which provide slightly varying information: 133 ct (Kathrin Unterreiner, &#8216;Habsburgs Verschollene Sch\u00e4tze&#8217; [The Lost Treasures of the Habsburgs]) and 137.2 ct (Wikipedia).&#13;<br \/>\n&#13;<br \/>\nThe fact that the &#8216;Florentine&#8217; is a diamond was confirmed with the aid of an electronic diamond tester. This measures the authenticity of a diamond based on its thermal conductivity.&#13;<br \/>\n&#13;<br \/>\nIts cut pattern corresponds almost exactly to representations in historical sources.&#13;<br \/>\n&#13;<br \/>\nAll of this gives me certainty that this is the genuine, historical &#8216;Florentine Diamond&#8217;.&#13;<br \/>\n&#13;<br \/>\nHere is a summary of the factors that led me to this conclusion:&#13;<br \/>\n&#13;<br \/>\n1. The stone fits into its setting.&#13;<br \/>\n2. Its weight of 137.17 ct corresponds to historical sources.&#13;<br \/>\n3. Its authenticity as a diamond was confirmed by an appropriate electronic device. 4. Its cut corresponds to historical sources.&#13;<br \/>\n&#13;<br \/>\nGrafalet&#13;<br \/>\nChristoph Kochen&#13;<br \/>\n&#13;<br \/>\nA.E. K\u00f6chert&#13;<br \/>\n&#13;<br \/>\nNeuer Markt 15 1010 Wien&#13;<br \/>\n&#13;<br \/>\n(43-1) 512 58 23&#13;<br \/>\n&#13;<br \/>\nwww.koechert.com&#13;<br \/>\n&#13;<br \/>\nA.E. K\u00f6chert Alter Markt 15.5020 Salzburg&#13;<br \/>\n&#13;<br \/>\n(43-662) 84 33 98<\/p>\n","protected":false},"excerpt":{"rendered":"K.U.K HOF-U. KAMMER- JUWELIER U. GOLDSCHMIED&#13; A.E.K\u00d6CHERT&#13; &#13; SEIT 1814&#13; &#13; October 21st 2025&#13; &#13; Results of the&hellip;\n","protected":false},"author":3,"featured_media":360947,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8],"tags":[137745,175318,159,67,132,68],"class_list":{"0":"post-360946","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-science","8":"tag-diamonds","9":"tag-hapsburg-family","10":"tag-science","11":"tag-united-states","12":"tag-unitedstates","13":"tag-us"},"share_on_mastodon":{"url":"https:\/\/pubeurope.com\/@us\/115505541621524023","error":""},"_links":{"self":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/360946","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/comments?post=360946"}],"version-history":[{"count":0,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/posts\/360946\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media\/360947"}],"wp:attachment":[{"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/media?parent=360946"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/categories?post=360946"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.europesays.com\/us\/wp-json\/wp\/v2\/tags?post=360946"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}