The full name of this stone is "Natural Scenic Dendritic Agate" - quite a mouthful!  Like most other natural stones, there are infinite variations of general color and mineral deposits in the stone.  This one's a mystical smoky white at the top with some interesting, rusty red and brown deposits on the bottom right.  I designed this frame to show off this feature of the stone.  The bail on this pendant is pretty unique...a is a bit wild and "organically unruly!"  
Antiqued, polished and sealed.  Will not darken further or rub off on skin.  No polishing needed.
Comes with a 24" faux-copper chain.  Please let me know if you need me to shorten it.