As you become engrossed in collecting fascinating minerals, your own personal tastes and preferences begin to emerge in your collection. Before you know it, you might find yourself collecting only stones from a particular country that has captured your imagination, or focusing exclusively on stones from the region where you were born and raised—or even developing such a strong preference that you won’t give a second glance to anything from a mine other than a specific one! Alternatively, you might collect stones of a uniform size, or focus solely on specific types or colours; the ways in which this passion manifests are as varied as the people who pursue it. This third instalment of our ‘Rare Minerals’ series explores these diverse ways of loving minerals. Obsession is perfectly fine—we hope you’ll discover your own unique passion for minerals. So, how will you go about collecting them?