What a lovely see through quality to the Borosilicate glass beads however this design challenges the artist to make every bead to perfection. These beads are glass fire-polished tube beads with brushed sterling silver 6mm round beads on rubber cords with sterling silver clasps. Can be worn single or double strand. 20 inches long.
Borosilicate is referred to as "hard glass" and has a higher melting point (approximately 3,000 °F / 1648 °C) than "soft glass", which is preferred for glassblowing by beadmakers.
Lampworking is a type of glasswork where a torch is primarily used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking.