If you are looking for a clasp that's a little different or want to make a statement, how about a Hill Tribe Silver togle clasp? They are quite elaborate and would enhance any design, perhaps by using it in the front or to the side of a necklace. They compliment lampwork beads well as they are all handmade by Karen craftsmen and are fair trade.
This toggle is called purity to reflect the simplicity of the design. A simple disc with an off centre hole for the toggle to pass through. It's an elegant clasp at 25mm.