Arizona rainbow petrified wood bookends are an amazing pair of bookends, in a beautiful mix of reds, tones of blacks, gray and creamy brown. Look at the actual detail of the wood grain. Perfect size for holding even your large books! .

Ultra Large Rainbow Petrified Wood Bookends 11" x 7.25" x 2"

(Set of 2)

Petrified wood is made up of almost solid quartz. The colors are produced by impurities in the quartz, such as iron, carbon, and manganese. Over 200 million years ago, the logs washed into an ancient river system and were rapidly buried deep enoughby sediment and debris also carried in the water. Oxygen was cut off and decay slowed to a process that would now take centuries. Minerals, including silica dissolved from volcanic ash,absorbed into the porous wood over thousands of years crystallized within the cellular structure, replacing organic matter over time.