mightier than the sword, and in some cases, more expensive, too. Consider this: the most expensive pen sold for $8 million (₹65.45 crore) at a charity auction in Shanghai in 2010. Called the Fulgus Nocturnus, which roughly translates to “Night Glow”, the pen manufactured by Italian pen designer Tibaldi comprises 945 black diamonds and 123 rubies with an 18k gold nib. But that’s not the only thing making it special. In a true testament to design, the pen’s dimensions are based on the Golden Ratio or phi, originally found in nature, the human body and often used as a design principle in architecture. The ratio of the length of the pen’s cap and
