More to explore:
I traced this pin to its source (earlier today) and bought one. http://www.etsy.com/listing... in case anyone else loves it as much as I do.
Thank you @Celeste M. :-)
Silver Compass Necklace
Antique Brass Compass Key Necklace
Compass Necklace Traveler Necklace, Best Friends, Gold Compass by LRoseDesigns, $36.75
love these rings