20079 - Top Beautiful 4.46 Inch Natural Red Iron-Oxide Coated Quartz Crystals Cluster Dicranurus and/or fused soil

and/or fused soil

Beautiful spine corresponding to the dorsal fin of this incredible shark that reigned the seas and the fluvial systems next to the coast during all the Mesozoic Era

Many pieces were collected on the surface or buried a few cm deep

Agassiz 1837 (elasmobranch)

Infraorder: Platynota DumCril & Bibron

20079 - Top Beautiful 4.46 Inch Natural Red Iron-Oxide Coated Quartz Crystals Cluster Dicranurus and/or fused soilIron oxide coated quartz, collected in Tinjejad mines (South Morocco). Rich red orange coloring. The coloration is natural and due to iron oxidation both outside, and included within the crystals.