Twenty years after the publication of the first modern work on the healing power of gems, Michael Gienger presented a clear list of current medicinal minerals in text and image form. As a pioneer and one of the most engaged researchers in this area of ​​healing, he managed to comply with the specific effects of more than four hundred species of stones and at the same time to describe precisely and clearly differentiate the healing characteristics of each separately. Individual passwords contain an accurate mineralogical description of the expensive mineral, its possible trade names on the market, areas of stones divided according to effects on spiritual, mental, intellectual and physical factors, and there are also valuable notes on their availability. Experts who want to inspire this progressive alternative field deeper.