Yes, gilt is a Scrabble word!
...and is worth 5 points in Scrabble, and 7 points in Words with Friends
gilt
Verb
1. Decorate with, or as if with, gold leaf or liquid gold
Adjective
1. Having the deep slightly brownish color of gold
Noun
1. A coating of gold or of something that looks like gold
What Scrabble words can I make with the letters in gilt?
3 Letter Words
2 Letter Words