Natural glass gemstones are caused by extraordinary geological events, such as intense heat and cataclysmic impacts. Natural glass...

Silica, or silicon dioxide (SiO2), occurs in the Earth’s crust, the microcosm and daily life. Silica makes ancient glass such as...

Glass of antimony , or vitrum antimonii , gives warm yellow or red hues. As Sb2O3, its use in alchemy is largely medicinal, one of many...

Sodium silicate or "water glass" or liquid glass, originates in ancient practices. A chemical compound, sodium silicate is composed of...

Sodium carbonate, also known as soda ash or washing soda, is prominent across various industries for millennia. It's used in ancient and...