“Welcoming the Princesses of Greece and the Netherlands into the country was given to her by the City of London. It was worn by Princess Alexandra on her wedding day and has become another icon of the Kent Royal Family’s jewelery collection.
“The majestic graded bangs design is adorned with beautiful bright diamonds, and somewhat unique to a fringe tiara, it cannot also be worn as a necklace.
“Today the diadem is favored by Princess Michael of Kent and has been featured in official portraits and is regularly worn for state occasions, most notably the Princess wore it to the ball in Vienna on her wedding night.
“Possibly featuring over 100 carats of diamonds, this crown of origin and importance is likely to be £1m-£3m.”
Gabriella and Thomas’ wedding ceremony took place at St George’s Chapel in Windsor, a popular venue for such occasions.