Sell Wrath gems! Get rich!

While gem shopping with one of my alts I noticed that there's a serious fault in the AH. There wasn't even a single useful, cut WOTLK gem for sale, even though I was playing on a high population realm. Every gem was a Cata gem, not usable by level <-80 people.I then logged on my JC and bought some relatively cheap uncut Wrath gems and also cobalt, saronite and tit ores which I then prospected for