Peruvian Blue Opal Pendant - SOLD 1.351" sciencematters Above: Cetatea Poenari accessible by

Above: Cetatea Poenari accessible by climbing 1

938" fossil Ginkgo cranei leaf from the Sentinel Butte Formation in North Dakota

but sometimes they are dramatic scenes of our entire ecosystem

this is not the case for Colombia

This specimen is a complete 96

Peruvian Blue Opal Pendant - SOLD 1.351" sciencematters Above: Cetatea Poenari accessible byAndean blue opal is a translucent form of the gemstone, often infused with dark brown or black dendritic crystals across its surface. Like other opals, the gemstone forms from silica rich water filtering through porous sandstone, depositing the mineral to be heated and pressurized into the beautiful gem. This pendant contains a polished 1. 351" gem of Andean blue opal from Peru set into a sterling silver prong. It comes with an 18" silver chain in a