THREE RIDDLES

1)

I am a word of distinction.

I can precede society, system, and roll.

I am sometimes seen with GUARD

When death takes its toll.

I can accompany a student,

Or am a title of recognition.

I can even give you credit in a competition.

2)

A pearl on black velvet, I serve two masters.

For one I run in circles that never end,

For the other, I hold a mirror to his glory.

3)

Found in a shell, but not the sea,

Yellow as the sun, white as snow.

Answers:

1. HONOR

2. Moon

3. An egg