In the context of the collaboration of the Ephorate of Antiquities of Arcadia with the XRF laboratory of INPP, several sections of gold leaf coming from excavation of a prehistoric cemetery in Arcadia were sent to the Louvre museum in Paris for further analysis.
You can see the relevant news release of the Ministry of Culture in the link
https://www.culture.gr/el/service/SitePages/view.aspx?iiD=4184#prettyPhoto