The police
The local authorities were just as surprised as the mountain climber himself when they saw the gemstones. They could hardly believe that this treasure was found on the mountain. As you read earlier, around 30,000 people take a shot at reaching the top every year. How could nobody have seen it before?
The police figured that the gemstones must have been placed there recently. This was the only answer they could think of to explain how nobody else had seen them. The only other option was bizarre coincidence. A few agents got to work on finding the rightful owner of the gems.
But first, they needed to figure out exactly what they were dealing with.