Board Thread:Speculation House/@comment-25045079-20140826195207/@comment-26397825-20151201033840

That theory doesn't explain why Cinder's symbol is a heart made of glass heels, or why Torchwicks is a Jack-o-Lantern face, or why Qrow and Ravens are mirrored Eyes with feather outlines. I think it's more just a personal choice, which the character chooses based on their personality and experiences (Ruby chose a Rose just like her mothers, because of her last name and she loved her mother, etc). Some people have herieditary symbols, which Jaune's fake one may be, but they are not limited to that one, and can choose their own symbol if they want.

Or, that's how I interpet it.