Time and time again the notion of diamonds being rare has been displaced. There are exceptions to everything. Red diamonds and blue diamonds are amongst the most highly sought collectors items in the world. Their scarcity is unmatched. Most recently, a 12.11 carat fancy intense blue diamond sold for approximately $1.3 Million Per Carat! Sotheby’s Auction House estimates this 1.38 ct Red Diamond to sell for $1.8 to $2.8M USD!