We present VeRidium, a fully immersive and interactive virtual reality environment for the utilization in university-level teaching. In a comparative study, one cohort of students was revisiting the fundamental structures of the metals in the virtual environment, another cohort was given the same tasks with clay models. Pre-Post-Test analyses reveal the efficacy and strengths of the virtual environment despite a larger preparational effort. Some lessons-learned are given from our journey starting with the programming of the environment from scratch, to final upload in the app store and implementation in lecture halls.