Sigerson Morrison Brielle pump | 13cm/5″ heel | buy online at Matches for $512
This pump is from the Resort 2013 collection featuring cobalt-blue suede, pointed-toe, stiletto heel, snake-effect strap across the vamp and velcro fastening ankle-strap with a hook-and-loop closure.
You can also find the Brielle in black/cream at Matches or in black at Zappos & Piperlime (ranging from 4.5-5″ heel). Half sizes are available.