I believe Lady Sarah Chatto owns the floral tiara. There is a picture somewhere here of Lady Sarah and Lady Linley dressed for evening. Lady Sarah wears a diamond riviere and a piece of the floral tiara as a long brooch. Lady Linley is without visible jewels. Lady Sarah normally dresses in an elegantly tailored way, with tasteful jewelry. Lady Linley wears simple designer clothing and seems not to enjoy jewels. I would guess that the two tiaras that they wore for their weddings will turn up on the same two heads at the next coronation. If Margarita is old enough by then, maybe she will wear the turquoise tiara.