... as often used when describing ladies’ head ornaments
Having started to reread parts of the James Pope-Hennessy (JP-H) biography, here is an extract supporting my view of the use of the word “crown”.
JP-H takes some random extracts from her dress-books for the Coronation Year Courts of 1911.
This Court was held before the coronation which was held on 22 June 1911.
“ For the Second Court, 10 May 1911, the entry reads as follows: ‘White & gold broche silk gown. Train of white satin embroidered silver & gold. Jewels: diamond crown, rows of diamonds forming collar, with large necklace under, lesser South African Stars, the Koh-i-noor, Star of Africa. Orders: the Garter, two family orders, & the Crown of India.’
I feel sure that “diamond crown” refers to a circlet.
For the fourth and last Court in that season, in JP-H, Queen Mary wore “Pearl and diamond tiara”.