A well prepared thief

The Tab reports that somebody didn't just swipe an $87,000 pair of earrings at Shreve, Crump and Low at the Chestnut Hill Mall:

Sometime between the end of August and the end of September, someone swapped out $87,000 earrings with cubic zirconia. ... A certified gemologist had walked into the store at the end of September and immediately noticed the fake jewelry. ...