Chilean Blue Opal Pendant - SOLD 1.237" carpoid "Extraterrestrial cause for the Cretaceous-Tertiary

"Extraterrestrial cause for the Cretaceous-Tertiary extinction

536" on the longest edge

340" sample of Red Planet Obsidian set into a sterling silver bezel

Sea Urchin

Chilean Blue Opal Pendant - SOLD 1.237" carpoid "Extraterrestrial cause for the Cretaceous-TertiaryAndean 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. 237" gem of Andean blue opal from Chile set into a sterling silver prong. It comes with an 18" silver chain in a