Weird, worked that time. Maybe I was too far away before.

a heterochromia iridum-iated ungulate

http://www.anopticalillusion.com/wp-...on-590x369.jpg
Straight and parallel

That's a good one. I had to open it in an image editor to measure the lines and see that they are level and plumb

god almighty
that one pushes the limits of believability
but you can hold a piece of paper up to the monitor and confirm!

For the season...

Wow, that's amazing.

Not everything is what it looks like to you, be careful judging diamonds... and people.

What is the border between the diamonds?

I don't think there is a border. I think each diamond is a gradient of gray shading, lighter at the bottom and darker at the top.

Ah! That makes sense. Very cool.

I don't see a gradient. I see solid gray.

Take a screen shot and use the eyedrop tool in photoshop to measure each diamond at the top and the bottom. You'll see.

I was waiting for Mr. Hand guy to rotate the diamond to give the trick away and blow our minds, but he never did.