I have a diamond solitaire ring for sale. It is a 1/3 carat princess-cut stone set in 14K yellow gold. It also has an enhancer soldered to it with several smaller diamonds in it that add up to another 1/4 carat. It is approximately size 7.5.
It was purchased from Kay Jewlers and was worn for less than 1 year. I had it professionally cleaned and inspected every 5-6 months under their lifetime waranty program. It has been cleaned since it was last worn.
It's very pretty! I also have the original receipt and certification paperwork on the ring. It is this ring but with yellow gold instead of white gold: http://www.kay.com//en/kaystore/diamond-solitaire-ring-1-3-carat-princess-cut--14k-white-gold (same SKU)
Paid $1195 for the solitaire and enhancer. Asking $500 cash.