My Necklace

It looks like a tiny precious piece of gold,
It shines brighter than the sun and it is old,
I love it so much if someone took it from me I would get so angry I could eat a horse,
It likes to dance when I am happy,
It smells like metal and it tastes cold,
It feels rough and tough,
When you shake it sounds like two pieces of metal smashing into each other,
The diamonds shimmer like the stars at night,
It is my necklace