Tiffany & Co Diamond Necklace -great condition

Tiffany & Co. diamonds by the yard necklace. I bought it new from Tiffany's a year ago for $490, Perfect new condition, barely used. No damage or staining. Comes with original Tiffany's jewelry bag. The diamond carat weight is: .03 Sterling silver with a round diamond. 16" chain. Selling it because I never get a chance to wear it :(