Which sentence uses a metaphor?

 - Zeke's eyes are as green as emeralds.
 - Zeke's eyes are bright green emeralds.
This sentence uses a metaphor:
Zeke's eyes are bright green emeralds.
The words eyes and emeralds are compared without the word like or as.
This sentence uses a simile:
Zeke's eyes are as green as emeralds.
The words eyes and emeralds are compared using the word as.