In 'The Book of Diamonds' by Joan Younger Dickinson (1965) the Flameng portrait is pictured with the text 'Queen Alexandra of England, wife of Edward VII, in her famous diamond-trellis necklace'. (p. 131).
In 'Jewelry - from Antiquity to the Present' by Clare Phillips (1996) the mystery garland necklace is pictured with the text ' Diamond résille necklace in the revived Louis XVI style made for Queen Alexandra by Cartier in 1904' (p. 157).