I was making a batch of iced tea, and was pretty amused by what happened to it. I first heated the water, dumped in a tablespoon of sugar without stirring it, and steeped the tea for five minutes. I came back to this:

Sugar separated at bottom of jar Closer view showing density layers Another angle of the separation

I found it rather amusing that the sugar all dissolved, but stayed saturated at the bottom of the jar, segregating itself from the tea above it.