A mirror, a speedster, a killer, a vane To know these is to know my name

I ruin parades. Royalty prefers me purple. The wealthy impersonate me with their money. What am I?

A celestial shape beneath the waves, I crawl along the sand and caves. With arms, but never meant to hold, My stories of the deep are told. I have no fins, no gills, no eyes,A twinkling creature in disguise. What am I?

I have no hinges, key, or lid, Yet golden treasure inside is hid. I must be broken before I can be used, And if I fall, I am easily bruised.

I share my name and draw my strength from the Sun. I stand tall and turn my face towards my namesake. What am I?