This pack contains two set of closures.  

The top one on the picture contains one large dangly heart with 11 Swarovski crystals on the front, and the second toggle is a swirly oval.  

The second bag attached to the closures contains crimp beads, silver plated spacer beads and beading wire. 

The picture really does not show how beautiful these pieces are.

I think the metal is Silver Plated, but I cannot be sure.