Silicon (Si) 24.26mm Metalloid Disc 99.999% Pure for Collection or Experiments hidden Command Crystal Knob Jewelry and

Command Crystal Knob Jewelry and Scarf Rack

Length: 110 Yards (100 meters)

08 inches (LW)

It provides good muscle support for daily leisure activities

Fluffy fibers for effective dust pickup

Silicon (Si) 24.26mm Metalloid Disc 99.999% Pure for Collection or Experiments hidden Command Crystal Knob Jewelry andSilicon (Si) 24. 26mm Metalloid Disc 99. 999% Pure for Collection or Experiments Silicon is a chemical element with symbol Si and atomic number 14. It is a hard and brittle crystalline solid with a blue grey metallic lustre; and it is a tetravalent metalloid and semiconductor. Silicon is the eighth most common element in the universe by mass, but very rarely occurs as the pure element in the Earth's crust. It is most widely distributed in dusts,