This scarf clip, opens on the top and clips onto your scarf, spring mechanism.  The diameter of the opening for your scarf is approximately .5" across and 1" down the center. 

The triple layer is steel.

The length of the piece is approximately 3.5" and the width, 1.5" 

Here is the link for the matching earrings: https://eyecatchingjewelry.com/sv05/