I'm astonished by the variety of Castell-Rüdenhausen tiaras: - In 2012 Countess Olga wore a small spikey tiara at her wedding with Prince Dominik von Löwenstein-Wertheim-Rosenborg. -In 2011 Countess Donata wore a large diamond tiara at her son Georg Friedrich's wedding in Potsdam. -But at her own wedding Donata wore yet another diamond tiara. That makes me really curious to learn more about their tiaras. Does anyone here have a clue?