Thank you, Cerys, for this beautiful picture of this beautiful tiara.
As far as I know, only the briolette diamonds hanging from the "arches" come from Empress Joséphine. The tiara itself was commissioned later by one of the Dukes of Leuchtenberg, who had settled in Russia after he had married one of the Czar's daughters.
--Previous Message-- : Found of Flickr, a lovely high definition : photo of that gorgeous Faberge tiara. : : https://www.flickr.com/photos/sulla55/8470198720/in/photolist-dUtYYY-7185ue-fDjiuY-kbcJDX-9tLqC3-7w38ah-8aiMhk-7ddrbw-4GWVZ1-ohunUf-5Wpfge-o13miU-o14n24-9Azj3Y-hE9Dew-deJ5dL-ohm6d7-qS5mz-ngmtec-eGnNQ1-9ytyLv-4t5i5W-eGZCNV-mmKpXX-f6s3xY-7VmcNx-5R4mxc-ohuuxA-ohkQUs-9CVG7h-9NCbao-bB7JEv-nLvfXm-bVk46W-c868Wd-4KC3NH-bvko8V-6dxtYg-9DfvDw-557yd8-gwZRxj-7piZ4x-gwZPRJ-9CXq7X-gx178Z-5aEbe3-c8663w-abC9gQ-6PK6jU-phcVi :