This sterling silver chain is heavy, expected to last through many wearings and can accommodate heavy pendants.  The 16 inch length sits up higher on the throat for higher necklines.  It looks much more expensive than I paid for it.  Silver Insanity, the seller, sent me an e-mail to check my mailing address was correct.  After I confirmed, they quickly sent it, so additional thoughtful service from the seller is a plus too.