How to use "shiny" in a sentence

Carol had been shiny-eyed and breathless because the high rollers had tipped her with green chips, as if they'd been winning instead of losing; for bringing them half a dozen drinks, she had collected twelve hundred dollars.

As I stood up, I noticed a shiny brown stone lying on the ground

Then I thought of something, and I took from my pocket the shiny brown stone I had found in the woods

And I also told her about the shiny brown stone I had found