This pendant is unique, a one of a kind.  The stone is a fossil of coral, needless to say, very old.  
I love being creative and on the back hand cut with a jeweler's saw, a palm tree for the wearer.  It's a tropical kind of thing.
It's set in sterling silver. The chain is also sterling silver and is 18" long.  The pendant measures 2" from the top of the bail to the bottom of the piece.