Which sentence uses a simile?

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