fossil formed by the penetration of minerals into the cavities between and within the cells of natural wood
Bei den versteinerten Wäldern im Westen der Vereinigten Staaten handelt es sich um verkieseltes Holz
Citrine is a semi-precious stone valued for its yellow to dark orange color and its similarity to the rarer topaz
which is the same as quartz
Additional Information: Kanab Wonderstone - scenic sandstone
SOLD | Meeresboden mit Ammoniten und Belemniten | Drügendorf, Franken, Bayern, Deutschland Quartz fossil formed by the penetrationOrigin: Drgendorf, Franconia, Bavaria, Germany Age: From the Upper Jurassic period, 163. 5 million years old Size: H83cm W62cm D25cm Description: Orthosphinctes sp. Malm gamma 1 This fascinating specimen dates from the 1980s and comes from a no longer active quarry. It has the appearance of a mosaic and is completely original and not reconstructed. With its dense, natural arrangement of ammonites, this impressive mass extinction plate contains