Editing Black Prince's Ruby (section)

===A wartime adornment===
During his campaign in France, [[Henry V of England]] wore a gem-encrusted helmet that included the Black Prince's Ruby.<ref>{{cite book|title=The Jewelers' Circular| url=https://books.google.com/books?id=hhwcAQAAMAAJ|volume=99|year=1930|publisher=Jewelers' Circular Company|page=121}}</ref> In the [[Battle of Agincourt]] on 25 October 1415, the French [[John I of Alençon|Duke of Alençon]] struck Henry on the head with a battleaxe, and Henry nearly lost both the helmet and his life. The battle was won by Henry's forces and the Black Prince's Ruby was saved. [[Richard III of England|Richard III]] is supposed to have worn the gemstone in his helmet at the [[Battle of Bosworth Field|Battle of Bosworth]] in 1485, in which he was killed.

[[File:Detail of Queen Victoria's Coronation Portrait.jpg|thumb|Detail of Queen Victoria's Coronation Portrait, showing the Black Prince's Ruby on the crown]]