“Often worn together when tending to their formal affairs, female royals have paired them in a number of ways,” Anthony said.

“Meghan has been seen in a pair of white gold diamond and pearl earrings.

“The Queen is often seen wearing a string of pearls around her neck, accompanied by a diamond brooch.”

When royals such as Kate have donned diamonds and pearls, the expert suggested they give a strong message that can be copied by anyone wearing the jewels.