I bought a box of sushi, and sat at the round table beside me.
Opening the plastic container made me feel as though I was unlocking a treasure chest. I peeked inside to admired its content. Under the store's lamp, the mini-eggs glistened like pearls. The red, white, and orange fish slices resembled legendary jewels from the bottom of the sea. And the pieces of omelet were as smooth and shiny as gold bars. I couldn't stand another second, so I picked up my chopsticks and got started.
I ate the sushi in less than a minute.
As you can see, the paragraph starts comparing the action as opening a treasure chest. And the metaphors/similes that follow are all related to it (pearls, jewels, gold bars).
I also tried writing the analogies in different ways (using as, like, and resembled).
Will all these metaphors/similes be too much for the reader? Or are they OK since they're part of the same theme?
EDIT:
Will this sound better? (using looked like and just repeating like afterwards):
Opening the plastic container made me feel as though I were unlocking a treasure chest. I peeked inside to admired its content. Under the store's lamp, the mini-eggs looked like glistening pearls. The red, white, and orange fish slices like legendary jewels from the bottom of the sea. And the pieces of shining omelet like gold bars. I couldn't stand another second, so I picked up my chopsticks and got started.