<http://schema.org/mpn>
"DD-103455309000"^^<http://www.w3.org/2001/XMLSchema#string>
<http://www.samuelsjewelers.com/0-03-ct-diamond-tw-and-6-1-2-ct-tgw-blue-topaz-sky-heart-pendant-with-chain-10k-white-gold-gh-i2-i3.html>