Some history can be found about the emerald and the ruby tiara, as well as the diamond and pearl one from Boucheron, on the Waddesdon site at

https://waddesdon.org.uk/the-collection/search/?collection=0&query_params%5BUSER_SYM_3%5D%5B%5D=tiaras&year_from=&year_to=&query_params%5BSUBJECT_EVENT%5D%5B%5D=&query_params%5BUSER_SYM_104%5D=&query_params%5BACCESSION_NO%5D=&sort=USER_SYM_111&direction=asc

Click on each photo and then on the "History" to see more.

For the necklaces see https://waddesdon.org.uk/the-collection/search/?collection=0&query_params%5BUSER_SYM_3%5D%5B%5D=necklaces&year_from=&year_to=&query_params%5BSUBJECT_EVENT%5D%5B%5D=&query_params%5BUSER_SYM_104%5D=&query_params%5BACCESSION_NO%5D=&sort=USER_SYM_111&direction=asc

The ruby necklace is featured at https://waddesdon.org.uk/the-collection/item/?id=36402

The emerald necklace is at https://waddesdon.org.uk/the-collection/item/?id=42010

Interestingly, the Waddesdon Manor site notes that some of the emeralds may have belonged to Empress Eugenie. No doubt further research by the curators may yet establish whether that was so.

Vincent Meylan gave the history of the diamond and pearl tiara/necklace in his history of Boucheron as well as on his Instagram site in July 2019

See Vincent Meylan's Instagram site https://www.instagram.com/p/BzyRoLHIaiP/

I particularly like the pendant pearl earrings, See https://waddesdon.org.uk/the-collection/item/?id=42521

though the elegant simplicity of the diamond earrings is stunning.

https://waddesdon.org.uk/the-collection/item/?id=42532

Queen Victoria's gift of a bracelet may also be of interest to some. See https://waddesdon.org.uk/the-collection/item/?id=838

When 992234177 did a post about the pearl and diamond tiara by Boucheron in July, https://mb.boardhost.com/historyroyaljewels/msg/1562764372.html I did some searching in the contemporary newspapers to see if I could find images of Dorothy de Rothschild wearing the jewel, but failed to find any photos of her wearing grand jewels -- but I recollect I didn't have time to do a thorough search. She is a fascinating lady! I doubt if there will be many photos in the press as, although her name features frequently, she seemed to practise the art of eluding photographers at evening events.