Pragnell are a family-owned English jewellers that have been in business for 170 years.
The Pragnell Tiara is owned by the family (and thus not for sale), and was made by them in the late Edwardian period. It's made of diamonds and pearls and features a greek key motif combined with laurel wreaths in the Edwardian style.
It made an unexpected appearance yesterday at the second wedding of Peter Phillips (Princess Anne's son) to Harriet Stirling. The couple had bought their engagement ring at Pragnells, and borrowed the Pragnell Tiara just for the day.