Short answers, pulled from the story.
Operation Lunar Eclipse began in 1998 as a federal undercover operation to identify and arrest individuals selling counterfeit Moon rocks. Senior Special Agent Joseph Gutheinz of NASA's Office of Inspector General posed as Tony Coriasso to execute the sting.
Approximately 180 of the 270 Apollo 11 and Apollo 17 Moon rocks given to nations worldwide by the Nixon Administration remain unaccounted for. Many accounted rocks are locked away in storage for decades while others were stolen or discarded.
Beginning in 2002, graduate students under Professor Joseph Gutheinz reported that both the Cyprus Apollo 11 Moon rock and the Cyprus Apollo 17 Goodwill Moon Rock were missing. The Cyprus Apollo 11 rock is actually a collection of lunar dust in a Lucite ball.
Coleman Anderson, a crab-fishing captain who appeared on the TV show Deadliest Catch, claimed to have found the rocks in garbage from a massive fire at the Alaska Transportation Museum in 1973. The missing Moon rocks were returned by Anderson as of the 7th of December 2012.
In June 2002, 101 grams of Moon rocks were stolen from the Johnson Space Center by interns Thad Roberts and Tiffany Fowler using knowledge gained during their internship. On the 20th of July 2002, two FBI agents met with Roberts, McWhorter, and Fowler, arresting all three and recovering the samples.