Answer:
I am a word. I become longer when the third letter is removed.
I have a ring but no fingers. I used to stay still all the time but nowadays I follow you around.
If you have me, you want to share me. Once you share me, you won't have me. What am I?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
Lovely and round I shine with pale light grown in the darkness a lady's delight.
When is it bad luck to see a black cat?