What's the name of this book????

it may be called ashes or something like that. i barely remember it, i think it's about a girl who's parents die, she meets a guy named diamond i think. they fall in love, i think she has a little sister. her house burns down, she has a little sister. i know its hardly any details but i dont remember:( i just remember it use to be my favorite book and i think its a youth chapter book