Mandala Brass Necklace

To make this glow in the dark brass collection I take silver plated brass pendants and fill them in with resin. I add a non-toxic mineral to pigment my resin, and it has the capacity to absorb light and slowly emit it. 
In the daytime, they have a glassy colorful effect, sometimes appearing to be stone. Any light will charge them, but ultra violet (UV) light will charge them the quickest. 
I use stainless steel for the chains, clasps and bails.