A diagonal ridge on the periodic table divides the metals and the non-metals and it is on this fence that bismuth hangs out. Common to other semi-metallic elements, bismuth breaks when bent. In addition to its lack of ductility (that’s the brittleness factor), it is also a poor conductor of heat. It does, however, very much look like a metal and at room temperature will stay that way because of its inherent resistance to corrosion. These characteristics are exploited commercially. Chemical inertness, low melting point and relatively low cost make for a compelling substitute wherever lead alloys are presently used.

Heavier than lead, these crushed bits of crystalline bismuth will minimize the chance of the glass breaking from shifting inside. A close look at all its sharp mini-shards is a treat from a textural perspective.