Underwood, 29, described the neck piece as "318 carats of gorgeousness", reported People magazine. "It's heavy on my soul. This is worth like more than me, and everything I have, and have ever had and ever will have.

I'm afraid someone is going to tackle me and steal it," she said. Underwood won Best Country Solo Performance and Best Country Song for "Blown Away". 

Photos: 55th Annual Grammy Awards

Carrie Underwood
Carrie Underwood. Pic/AFP