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69" dendritic agate crystal on a sterling silver prong backing and an 18" chain
The combination of such materials is as surprising to science as it is beautiful to the eye
Above: Grant holding a Rough Opal specimen
"We need to start thinking of dinosaurs as not just brutes and not just monsters
Some edges will be smooth and others will be sharp so do take care when handling this specimen
Mazon Creek Fossil Plant Concretions Size:Small 69" dendritic agate crystal on300,000,000 years ago, in the Carboniferous Period, Earth was a dense tropical jungle. Lush forests were home to all manner of prehistoric creatures and swampy landscapes covered the surface. We know of this incredible time thanks to the fossil imprints left behind by plants that were preserved for millions of years. This specimen is a split pair fossil plant concretion that was recovered from Mazon Creek in Illinois. This former coal mine turned
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