It is reported that more than 200 Irish Claddagh rings were recovered from the rubble at Ground Zero following the September 11, 2001, terrorist attacks. An estimated 1,000 people who died in the attacks had Irish roots, reflecting the deep ties between New York City and Ireland, particularly within the NYPD and FDNY. Rescue and recovery workers found the Claddagh rings while sifting through the debris. Family members also used the distinct rings to help identify missing loved ones.

The Claddagh ring features two hands for friendship, a heart for love, and a crown for loyalty. These symbols came to represent the dedication and camaraderie of the first responders, many of whom are now suffering from certified WTC/911 related illnesses.