Alexandra was a true style setter in her day, not only because of her love of tiaras, but especially for dog collar choker style necklaces which she favoured in order to cover a childhood scar on her neck.
In the above photo Alexandra is wearing her wedding parure, unusually, the tiara and the necklaces & brooches are not in matching designs.
When Alexandra, died the tiara was inherited by Princess Victoria and eventually broken down and sold, but the rest of the set became Queen Mary’s, who gave it to her daughter in law Elizabeth.
Elizabeth, then the Duchess of York, loved the set, wearing parts of it throughout her life. She wore Alexandra’s pearl and diamond necklace
(the chunky one with huge pearls at the centre of the large rosettes in the photo) at her daughter Elizabeth’s wedding day in 1947. At the Queen Mother’s death, the set passed to Queen Elizabeth, who often wears the earrings.
More recently, Kate has occasionally worn Alexandra’s pearl and diamond necklace.