The Duke of Edinburgh officially proposed to Queen Elizabeth in 1947.

According toTown and Country, however, he first proposed to the Queen in 1946, in Scotland.

King George insisted that the couple postpone their engagement until his daughter was a little older.

Close up of Queen Elizabeth’s engagement ring and wedding band

The slogan “a diamond is forever” resonated greatly with the public.

To this day, diamonds are the engagement stone of choice.

Queen Elizabeth’s engagement ring also has remarkable significance and meaning.

Queen Elizabeth wearing tiara and Prince Philip

The late Duke designed it himself out of a family heirloom.

Princess Alice was gifted the tiara from Tsar Nicholas II and Tsarina Alexandra of Russia.

Onlinereports that this custom piece of historical jewelry is now valued at 100,000, or $168,480.