The listing, 5 Listia Won Rings that I Don't Want - Free Shipping has ended.
http://www.listia.com/auction/679702 - "Engagement wedding set rings woman's rings size 9 to 91/2 18k HGE nice rings silver ton i bought at auction sale would not fit my wife's finger the stones are ZZ i think so not certain" - HGE means heavy gold electroplate but some has worn off these rings. The stones did not test as real diamonds - the lot went for 668 credits. My sizing from a PDF ring sizing document I found online, shows size 11 for both rings.
http://www.listia.com/auction/549984 - these are supposed to be Sterling Silver and are marked that way. These were disappointing to me because they are lightweight and maybe too polished. They are obviously brand new at least. They are size 8.5 and 10. They went for 1910 credits.
http://www.listia.com/auction/471189 - this ring is quite beautiful, but again the diamonds did not test as real.
The sapphire, topaz or tanzaanite might be real or man made variety. I found who I believe is the manufacturer which is JTV as the box the ring came in has the same stripes as the background of the website. It is probably rhodinium plated over maybe silver although the rhodinium is starting to wear off. Rings are rhodinium plated because it is a hard substance that doesn't usually wear off easily. Again it's quite a breathtaking ring, just not very valuable. Today it's worth at most $25. It went for 2020 credits. It's a very small ring size 5.5, I think although it's difficult to exactly size because of the big crown.