1. What of the Nizam tiara Stefan? Even though we know that QEII had it dismantled to make the Burmese ruby tiara.
2. I wonder if such a list should include the Halo tiara? We know that it was given to her. But I don't think anyone has found concrete evidence that she wore it.
By the Russian Kokoshnik Do you mean Queen Alexandra's tiara? -- the one given to her by the Ladies of Society for her 25th wedding anniversary.