A Special Object

You are as white as a polished pearl.
As rough as a 4WD track.
If you could speak,
You would tell me about your precious life.
If I lost you or you broke I would be so upset,
For a long time you have been mine.
If I had to give you away, to my brother you would go,
For he is my best friend which is why, to him you would go.
You are as valuable as life,
but you are as fragile as glass dolls.
You are as dry as dead grass,
You are as precious as life.
I nearly died finding you.
I wish I could tell people what you are.
All I can say is you are my special object.