Anthony Nak, the uber-chic jewelers whose flagship store opened in Austin back in 2003, were carjacked this past weekend. The thieves made off with thirteen pieces of Tanzanite -- a nearly extinct stone from Tanzania, Africa -- set in platinum and gold jewelry. Ten of the pieces were recovered earlier this week from a local pawn shop. Tanzanite, for the majority of us who can't even afford to google it, is a precious blue-violet gemstone......