Diamond tiara/necklace belonged to Mary, Duchess of Roxburghe, last quarter 19C. Fleur de lys and scroll motifs, swing set with graduated pearshaped diamonds, on a band composed of lozenge and trefoil motifs, set throughout with cushion-shaped and rose diamonds. Images Sotheby's.
"Persian Flames of Love" tiara. On her 21st birthday, Princess Margaret received from her mother the “Flames of Love” of Persian turquoises set in diamonds that the Queen herself had received as a wedding gift in 1923 from her father-in-law, King George V. (photo "Tiaras: A History of Splendour" by Geoffrey Munn)
The Teck Crescent Tiara came from Queen Mary's mother, The Duchess of Teck, who in turn created it from jewels inherited from her aunt, Princess Mary, Duchess of Gloucester. It ended up in the possession of Queen Elizabeth (the future Queen Mother), likely given to her by Queen Mary. It includes 3 wild roses & 20 crescent shapes in diamonds.