Some pens owned by Indian collectors cost between Rs 30,000 and Rs 12 lakh each and are limited-edition pieces by brands such as Mont Blanc, Sheaffer and Parker, handcrafted from silver or, as in one case, made from lava spewed by Mount Etna. Some of the most expensive pens in the world cost in crores. In this infographic, we take a look at the world’s most expensive pens.