My version of porn are Sotheby's Magnificent Jewels auction catalogs... I have quite a few. They always start with the smaller, less expensive pieces, and work their way towards the more special pieces at the end, ending with the ones that are truly stunning.
One of my catalogs has as the very last item, a pair of 10ct+ round diamond earrings. They ate humongous simple studs with an Omega back, D color, 10+ carats, IF clarity and they have a huge blurb on how to find a stone like this is exceptional, and to find a matched pair is truly almost a once in a lifetime thing... The lot includes the diamond earrings and an exact replica made with CZ.