The most expensive Pen in the world is produced by a very elitist and highly regarded pen maker named Aurora. This little and highly specialized Italian company makes once every year a fountain pen named the Aurora Diamante. The pen is worth roughly US $1.3 million. There are numerous reasons why this pen is so precious. The most obvious are the 30 carats of De beers diamonds that cover most of its visible surface. Approximately two thousand class 4 C diamonds are used in this process; it is a fragile and meticulous task that requires an inspiring level of talent. The two hectogram barrel of the most expensive pen in the world is made out of solid platinum and the nib out of 18 carat gold. The nib can be customized on request to display the coat of arms of the client, the signature of the owner or even a portrait. This is comprehensible as the most expensive pen in the world is a highly delicate item and any owner would desire to leave his or her mark on it.