From Mimi and Lucy, a soldered glass tile art charm pendant necklace - Brides Romances.
The ball chain is included with this pendant.
An image from a purchased collage sheet is mounted behind a smooth glass tile, wrapped around the sides and edges of the back with copper foil tape, then soldered over the tape with lead free silver solder.
The pendant measures about 1" square and 1/4" thick. The back side is plastic laminate covered paper, as shown in the last picture.