This image used a circular polarising filter. See the previous image (0051) for a comparison shot and an explanation of what this was about.

Note that it's not just the filter alone that caused the difference given that the shutter speed slowed down from 1/200th of a second in the first shot to 1/100th of a second here.


Addendum: My personal opinion is that Facebook is a sociopathic organisation that steals other peoples' intellectual property (including the images in this gallery) despite being explicitly denied permission to do so. Facebook going out of business would IMO be a net gain for humanity.