Grape Agate M/L Emerald The herring-like fish of the

The herring-like fish of the genus Knightia were far and away the most abundant freshwater fish during this era

Tree trunks

and branches that died under conditions that favor fossilization gradually become replaced with minerals until what remains is a replica of the original piece of wood consisting entirely of mineral material

One of the most common minerals on earth

and because of this they are one of the most frequently found vertebrate fossils on earth

Grape Agate M/L Emerald The herring-like fish of theGrape Agate is a unique and distinctive mineral known from only a few locations on earth. Not technically an agate, it is instead formally known as botryoidal purple chalcedony. Named for the small spherical crystal nodules, these individual grapes can range in color from turquoise to deep purple, depending on the presence of minerals like manganese or iron during the formation of the crystals. Grape agate is a relatively new mineral and sought after