Portrait of Queen Charlotte, detail, 1781, by Thomas Gainsborough, Royal Collection (Buckingham Palace), London, UK. https://www.thomas-gainsborough.org/ https://www.royal.uk/queen-charlotte
The Ulm Münster Book-Covers, Ulm, ca. 1506, via The British Museum. https://research.britishmuseum.org/research/collection_online/collection_object_details.aspx?objectId=33045&partId=1
A Fabergé jeweled gold-mounted purpurine bracelet, workmaster Michael Perchin, St. Petersburg, ca. 1890, via Sotheby's. https://www.sothebys.com/en/ https://www.faberge.com/