Very bright UFO photographed somewhere in California

On October 27, 2014, somewhere in the state of California (USA), a diamond-shaped UFO is appeared in the clear sky during broad day-light. Object was very bright.

Witness statement:

I was out taking photos of the Sun setting through trees weed excetera. When reviewing my photos later I noticed a strange object in one photograph I have no idea if it is a UFO or some kind of crazy lens flare or what so I am hoping you will examine and inform me. I am attaching the original photo taken with my phone Samsung S3 and two crops that I made of it to see what it was.