6mm Glass Pearl Beads 80cm Strand - many colours

Glass is an amorphous (non-crystalline) solid material. Glasses are typically brittle, and often optically transparent. Strictly speaking, a glass is defined as an inorganic product of fusion which has been cooled through its glass transition to the solid state without crystallising. However, other substances can be added to common glass in it's molten state changing it's appearance and colour.