Its Mohs hardness ranges from 5

and spiritual magic

Boost courage and willpower

Ideal for anyone seeking emotional healing

Element: Air

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil hexagonal garnet crystal Its Mohs hardness ranges fromA beautifully preserved specimen of Promicroceras planicosta, fully replaced by calcite. This ammonite displays fine ribbing and its characteristic planispiral coiling. As a key index fossil of the Lower Jurassic Sinemurian, Promicroceras is highly significant for ammonite biostratigraphy in the UK. An excellent choice for collectors, researchers, or curated display. Stratigraphic Context Lower Lias Group, Obtusum Zone Chronostratigraphy Lower