Set in brass/NuGold with gold foil added behind the semi transparent stone to keep the golden glowy flash even after the brass takes on its natural patina. The back has been roll textured with a honeycomb design. (see video)
 
I have no clue what this stone is, it might be some sort of quartz, I might be swirled glass?.... I've had it in my stash for many years and today was the day it jumped out at me and screamed, "SAVE THE BEES!"

Measures approx. 1.5" x 1" including bail.
***Comes on a stainless steel chain -- if you'd like a black cord instead, leave a note during checkout.