Stolen
The professor examined the gems once they got there and gave them the unfortunate news. The gems didn’t even belong on the plane. They had been stolen 70 years ago and had never been found until today.
This meant that they tragically couldn’t keep the gems. But they took it on their chins and were happy enough to be able to have made the amazing find.
In order to protect the privacy of those depicted, some names, locations, and identifying characteristics have been changed and are products of the author’s imagination. Any resemblances to actual events or places or persons, living or dead, are entirely coincidental.