Rough Ruby jurassic the fortress was one of

the fortress was one of Tepes's favorite haunts

NASA engineers discovered that faulty waterproofing used throughout the Thermal Protection System (TPS) allowed debonding of the tiles

Above: The rugged terrain of Putorana Plateau on the Taymyr Peninsula in Siberia

Bismuth is most commonly used for medicinal purposes in the compound bismuth subsalicylate

28" polished slab cross-section from an Alaskan Woolly Mammoth

Rough Ruby jurassic the fortress was one ofAmong the five cardinal gemstones, the ruby holds a special place. This striking gem fuses shades of red and blue into new menageries of color. Like other gemstones, rubies are imprints of past geological processes, shedding light on the tectonic forces churning below our feet. This specimen is a piece of rough ruby, demonstrating its natural form. First appearing in the Fifth Edition, this gemstone comes with a small informational card that serves as