Metaphysical PropertiesBlack tourmaline is considered one of the most grounding crystals

created through a unique enhancement process that combines natural Quartz with high-frequency metal infusion

over-bright fluorescent lighting

Each piece combines ancient energy with sacred geometry to shield

emotional harmony and gentle optimism

Promicroceras planicosta (Reynès, 1879) – Calcite Ammonite Fossil GeoFossils Rhodolite Metaphysical PropertiesBlack tourmaline is consideredA 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