Explaining Everything on Instagram: "The process begins with raw silica sand—one of the toughest, most abundant minerals on Earth. When heated in massive industrial furnaces to over 1,600°C (2,900°F), this rock-like material melts into glowing liquid glass. Workers or automated systems then gather the molten glob with special tools and drop it into precision molds. Inside the mold, compressed air blows the liquid glass into shape, forming the smooth, perfectly curved walls of the jar. After shap