PS I hope I am not breaking any rules doing this, but I thought I would put this link up for georginjone. It's what i was thinking of when i said detail.

This is a jewellery seller I have bought from (but don't know personally or anything) & one of the reasons I bought was their ads are very descriptive.

Admittedly they sell new stuff & when selling a second hand item, I doubt most people could be quite as detailed but it gives a basic idea.

This seller routinely seems to achieve quite good sale prices for their items & I imagine that is because people know exactly what to expect.

http://www.ebay.com.au/itm/151933742967?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT