The Prussian Diamond Tiara was given to Viktoria Luise of Prussia by her father, Wilhelm II, upon the occasion of her marriage to Ernst August of Hanover in 1913.
Viktoria Luise passed the tiara on to her daughter, Frederica, who married Paul of Greece, and the tiara now belongs to their daughter, Queen Sofia of Spain. While the tiara has also been worn by Sofia’s own daughters, it is mainly worn today by her daughter-in-law, Queen Letizia, who first wore it at her wedding.
The fact the tiara became part of the Greek royal family seems to have been pre-destined from the design itself which is very Hellenic in style. The base of the diamond and platinum tiara has a row of Greek keys supporting columns topped by laurel wreaths, and features a central tear drop diamond en tremblant.