Re; the Tiffany iris broach: Voynick p.204 states the stones of the broach were "mined by Charles Gadson's men in the early 1900s, were sold to Tiffany by the New Mine Sapphire Syndicate." And the broach was sold by Tiffany in 1909. That kinda rules out the 1900 silver. And the 1904 bronze was for "uncut Yogo sapphires" (p.93). So it doesn't seem the broach won either medal.