Pearl: Hard object that grows around a grain of sand or other foreign matter as a defensive measure of certain molluscules. Pearl is a book about Madeira Island, nicknamed as 'The Pearl of the Atlantic', a highly touristic place known for its Nature and its unique Laurisilva Forests. Tiago was intrigued by this phenomenon of natural transformation of a living being through the creation of a non-living hard object, that turns out to be a very rare and valuable object, referenced as an example of beauty. So, how subjective can beauty get when a bizarre defensive measure turns out as a model of beauty? This book is about this relation between the subjective senses of beauty and ugliness and how the line between both senses is so thin and insignificant, working on this specific place, the Pearl of the Atlantic.