<https://www.catawiki.com/c/673-mixed-diamonds>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<http://schema.org/Thing>
<https://www.catawiki.com/l/38445697-1-pcs-diamond-1-03-ct-princess-natural-fancy-yellow-fancy-yellow-vvs2>