Save 15% on ALL stringing materials and get a FREE gift with purchase. (Click for Details)
Borosilicate Glass [bawr-uh-Sil-i-kit|Glass]
Borosilicate Glass is a type of glass material composed of at least five percent boric oxide. This oxide allows the glass to resist extreme temperatures, ideal in lampworking. Borosilicate glass can handle both very hot and very cold temperatures, and will crack or snap, rather than shatter, if broken.