The Andamooka Opal was presented to Queen Elizabeth II in 1954 on her first visit to South Australia. The opal was cut and polished by John Altmann to a weight of 203 carats. It displays a magnificent array of reds, blues, and greens and was set with diamonds into an 18 karat palladium necklet.
Queen: You mean Andamooka Opal? Why, it’s th’ most precious gem in all th’
Futurama S06E20“All the Presidents’ Heads” episode of the sixth season
“Fry goes to his night job at the Head Museum where he feeds the preserved heads of the Presidents of the United States. He invites the Planet Express crew to the museum for a party, where they become drunk and begin ingesting the preservative fluid inside the jars. Doing so causes them and everyone standing nearby to temporarily travel back in time to the eras each head originally came from. Professor “Farnsworth reasons that this time travel effect is caused by the rare powdered crystalline opal used to make the fluid, which keeps the heads alive in a temporal bubble. Farnsworth despairs that there is no way to travel to the past to fix their mistake until he notices the Andamooka Opal on the queen’s crown. After stealing and crushing it, the four are able to use the preserved head of David Farnsworth to return to colonial times and restore the timeline.”
