This is one of several episodes involving jewel thieves, including Gem Robbery Season 2 Episode 2, Gem Robbery (same name different story) Season 4 Episode 19, and Deadly Diamonds Season 4 Episode 9.
Given the same names, there is some confusion among a number of reviewers on IMDb, YouTube, and other websites. There are also several copies on YouTube that have the wrong title (for example, there is a copy of "Gem Robbery" from Season 4 on YouTube, it is listed as "Deadly Diamonds", also from Season 4.
If you are unsure of which episode you are watching, and you don't have the DVD notes, go to the credits that roll at the end of the show. Read the names of the actors and actresses. That will help you determine which episode you are watching!
Given the same names, there is some confusion among a number of reviewers on IMDb, YouTube, and other websites. There are also several copies on YouTube that have the wrong title (for example, there is a copy of "Gem Robbery" from Season 4 on YouTube, it is listed as "Deadly Diamonds", also from Season 4.
If you are unsure of which episode you are watching, and you don't have the DVD notes, go to the credits that roll at the end of the show. Read the names of the actors and actresses. That will help you determine which episode you are watching!