Per Theodora Bosanquet (1918, The Little Review) Henry James’s ultimate feeling about Daisy Miller “came to be like that of some grande dame possessing a jewel-case richly stocked with glowing rubies and flashing diamonds, but condemned by her admirers always to appear in the single string of moonstones worn at her first dance”.
(Cited by William T. Stafford in his “Introduction” to James’s Daisy Miller, Scribner, 1963, p. 3).
“It has been by a celebrated person [Edna St. Vincent Millay, Wilson’s lover at that time] that to meet F. Scott Fitzgerald is to think of a stupid old woman with whom someone has left a diamond; she is extremely proud of the diamond and shows it to everyone who comes by, and everyone is surprised that such an ignorant old woman should possess so valuable a jewel; for in nothing does she appear so stupid as in the remarks she makes about the diamond”.
Edmund Wilson, “Fitzgerald Before The Great Gatsby“, in F. Scott Fitzgerald, ed. Alfred Kazin, World Publishing Co., 1951, p. 77 (also in The Shores of Light, 1952).