Where can I find a web site displaing photos of differant trademarks/logos that are stamped on diamond rings?

After paying over $100 to have my cert. Platinum diamond ring resized ,and given specific instructions not to stretch but to cut and add leaving the printed details intact, it arrived stretched,lighter(like white gold),the cert.# scratched, faded and appeared 1or 2 #'s off. The diamond appeared different too! Perhaps changed,Yet not experienced enough and lost papers I fibbed out of fear stating "I will go home and look for my paper work to prove that's not the right # or diamond."So it was sent back out to correct their 'mistakes" With even more detailed specific instructions down to dimensions. On the second return the diamond appeared to be back to my Original,the shank much nicer looking but missing it trademark/logo.now