They are Stars.
I come at night without being fetched, by day I am lost without being stolen. I am like a jewel, But, I am like no diamond. What am I?
At dusk I come without being fetched. At dawn I disappear without being stolen. I'm a poet's tears and a sailor's guide. What am I?
I come during winter, But leave during summer. You'll see me at night, And maybe during day, But one time you'll never see me, Is without heat in my bay.
You see me at night, by day you tell everyone about me. I come back looking differently than before. I sometime leave you in the darkness. What am I?