This paper outlines the 10 major topics related to geodiversity that have emerged since the concept was first introduced in 1993, 30 years ago. After a short introduction, each of the 10 topics is then illustrated by a relevant case study. The 10 topics (italics) and their case studies (bold) are as follows: 1. Celebrating, International Geodiversity Day; 2. Measurement/Assessment, Potential role of remote sensing; 3. Natural Capital and Geosystem Services, Coastal geosystem services; 4. Biodiversity, Mangue de Pedra, Brazil; 5. Geomaterials, The circular economy; 6. Geotourism, World's top geotourism sites?; 7. Geoheritage, Landscape restoration; 8. National Geoconservation, Trump golf course and an SSSI, Scotland; 9. World Heritage Sites and Global Geoparks, Azores Global Geopark, Portugal; 10. Sustainability, Xitle Volcano, Mexico City. It is concluded that, given the way in which geodiversity has developed as a concept, leading to new insights and avenues of research and advancing our understanding of the world since its first use, it clearly now constitutes a significant, geoscientific paradigm. This article is part of the Theo Murphy meeting issue 'Geodiversity for science and society'.
Keywords: geoconservation; geodiversity; geoheritage; geosystem services; geotourism; sustainability.