So many stories in this beach stone. Wishing stones usually have an unbroken white line that runs through it.  This one has many.   They are considered lucky, and a common ritual involves making a wish while holding the stone and then tossing it into a body of water.   This ring should bring you good luck.  
 
Details:
Beach Stone (1" x 5/8")
Band Width: 1/4"
Band: Recycled sterling silver
Finish: oxidized
Size: 8