4. The Diamond Stars of Princess Benedikte.
Donn by: Ingrid Queen
Since the early 1900s
Value Estimate: $500k–$1,000,000*
Princess Benedikte is frequently seen attending royal functions, galas, and charity balls while donning her Diamond Stars. These diamond stars were left to the Princess of Denmark by Queen Ingrid, and she has worn them in a variety of imaginative ways, such as as a necklace or combined with other tiaras.
Diamond Stars by Princess Benedikte @courtjeweller/Pinterest
Other living royals have also worn the Diamond Stars, such as Princess Alexandra, who wore them to both her wedding and her father's funeral. The Diamond Stars are an illustrious and recognizable jewelry item that has been owned by the Danish Royal Family for more than a century.