Queen Mary of Denmark debuts stunning tiara at state visit after historic move

Queen Mary of Denmark has made a stunning appearance at a state dinner held for Egypt's President Abdel Fattah al-Sisi at Amalienborg Palace.

The Australian-born royal wore her new rose-cut diamond tiara, which the royal helped Australian-born royal.

The Danish royal family have a history of reshaping crown jewels over time.

READ MORE: Actor's emotional message as top Hollywood exec dies

The diamonds in the Rose Stone Tiara date back to the 1840s and were previously worn by Queen Lovisa, the wife of Frederik VIII, as a chain.

Mary, 52, wore the tiara with a black gown with diamantes over the shoulders and sleeves.

READ MORE: We don't often see this man in the crowd

She completed the look with black heels and Belle Époque earrings from Bruun Rasmussen.

A video, shared by the palace on Tuesday, showed Mary trying on the newly-imagined Rose Stone Tiara.

"The frame on which the rose stones in the new diadem are mounted was created by jeweller Matias Hasbo Dinesen in consultation with the Queen and the Royal Danish Collection," the caption to the video read.

"The rose stone set was created in 1840 as a chain that is mounted around a corseted waist with the large pendant, the corsage, in the middle. The pendant can be divided and used separately as independent brooches."

One of the rose-cut diamond set's only public appearances came in 1991 when Queen Margrethe wore it during a state visit by the Norwegian royals to Denmark.

Margrethe wore the necklace in its shortened form and had the four brooches from the set pinned to her dress.

The Danish royal family recently attended the premiere of The Nutcracker ballet at Tivoli Concert Hall Copenhagen, in support of Margarethe, who served as costume designer for the production.

Queen Mary and King Frederik attended the performance with three of their four children, Princess Isabella, 17, as well as twins Princess Josephine and Prince Vincent, 13.

Their eldest child, Crown Prince Christian, 19, has recently been in East Africa for the past three months doing charity work.

"Everyday life down here is something completely different than at home," he said in a social media post.

"The food, the culture, the climate, the wildlife, the tasks and the people make it an experience I will never forget."

READ MORE: Prince William attends reopening of Notre Dame solo

He continued: "I'm both supervising and registering animals in the bush and taking care of the office on the farm," he continued.

"As the video shows, I get really close to the wild animals when they have their GPS collars replaced during anesthesia.

"Learning a lot about life down here and have helped build new houses for the employees," he said.

"And then I played some good football matches with the locals. But now I'm also starting to look forward to returning home to the family in Denmark and celebrating Christmas in a few weeks."

Christian also revealed as of February he'll be working as a military officer at the Guardhouse Regiment in Slagelse.

The Danish royal family recently revealed their plans for Christmas.

Frederik and Queen Mary will uphold a long-standing Danish royal family Christmas tradition by spending their first festive season since the change of throne in Aarhus.

The Danish royal household has confirmed the King and Queen, and their four children, will be at Marselisborg Castle for Christmas, taking up residence at the estate from December 23 to December 26.

FOLLOW US ON WHATSAPP HERE: Stay across all the latest in celebrity, lifestyle and opinion via our WhatsApp channel. No comments, no algorithm and nobody can see your private details.