Needing a friend poem

I am needing to find a poem about friendship that means alot. I am female (straight) and I have found my ultimate best friend. She is everything I could have ever wished and hoped for in a friend. I love her like my sister that I never had because I am an only child. Can someone help?

A letter

try to read it

(",)

Friends (Hard to come by)
Precious as a diamond ring
Thank you, Kim

All these may fit well.