Andean 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 0.659" gem of Andean blue opal from Peru set into a sterling silver prong. It comes with an 18" silver chain in a padded black jewelry box.