Diamond Price Speculation

The world-record high prices on quality diamonds is rather interesting because this has happened before + the dealers tend to have short memories or they may be going through momentary autism, or they may never learn from past mistakes, or is it pump and dump, I really don't know, but I found the article @ http://www.reuters.com/article/idUSL126151820080312 educational + insightful + now on the dangers of speculative pricing by dealers -- you be the judge!