The Gemini

Mystical signs from the gods?
Every word to be true?
Nahhh... you know me better -
Just some fun for you.

Through the pages you'll find
Some gems sparkling bright,
Then toss it away -
It's best out of sight.

I DID do my own marking,
(An old habit I've yet to lose)
But in the end, it's our hearts
Which provide all the clues.