I love Twilight Sparkle's eyes and Rainbow Dash's eyes. Twilight's are such a pretty purple and Rainbow's eyes are like hot pink. I love there eyes the best :D

I only picked Rarity's cause they looked like the doctor's XD and also I like rds eyes cause Derpy pink and rd is a Bawwssssss.if they put Derpy I bet she would win XD

Love them~ especially when those sparkles appear..well she is Twilight Sparkle x3 Pinkie's and Fluttershy's too!

Rarity, and Pinkie Pie's. They're pretty much the same color, only Pinkie's is a lighter shade of blue.

Pinkie's eye color is really pretty. I wish my eyes were that color.

Out of the mane six, Fluttershy. But in general, I actually like Sunset Shimmer's eye color the most.

Hmm^ out of all, I think Ditzy Doo's. Yellow is a very cool eye color.

Even in cartoons..
Green eyes are the prettiest

Though mine is the same as either Rarity or Pinkie

Her teal and AJ's green...then Dash, Twi, & Pinkie/Rarity

*Edit brought to you by future Alinah_09

Up to this day, I still like Twi's purple, no doubt about that but I've now come to admit on liking Rainbow's magenta-ish ones as well (although I think it started with Vinyl's, first of all, even though wiki says they have the same eye color anyway). :) Also the others! Don't get me wrong, I think they are all unique in their own ways, especially in regards to their own color palettes. (i.e. Sunset's teal with her mane)

So the point here? Pretty much, everypony has their own set of jewels that are unique in their own way. ^_^