The Claddagh ring is a traditional Irish ring that symbolizes love, loyalty, and friendship. The ring's design features a heart, a crown, and two hands clasped together:
 
Heart: Represents love
Crown: Represents loyalty
Hands: Represents friendship 
 
The ring's meaning is encapsulated in the Gaelic phrase Grá, Dílseacht, Cairdeas, which translates to "Love, Loyalty & Friendship". 
 
The Claddagh ring originated in the 17th or 18th century in the small fishing village of Claddagh, County Galway, Ireland. The name Claddagh comes from the Irish word Cladach, which means "shore". 
 
The ring is often given to celebrate romantic love, such as an engagement, wedding, or promise ring. It can also be given to celebrate an enduring friendship, a trip to Ireland, or Irish heritage. 
 
The way a Claddagh ring is worn can indicate the wearer's relationship status:
Right hand, heart facing out: The wearer is single 
Right hand, heart facing in: The wearer is in a relationship 
Left hand, heart facing out: The wearer is engaged 
Left hand, heart facing in: The wearer is married