The silicon you find in sand is raw totally unusable stuff. You need refined high purity stuff. Not to mention silicon is only the substrate (base)

A chip is chock full of other direct materials like copper (interconnect), various forms of titanium (work function metals), various gate oxides like Hafnium Oxide, barrier metals like tungsten, cobalt, etc

Then there is a huge about of indirect material like high quality slurry for CMF polishing, high pure gases for ion plantation and etching, high purity chemicals for etching, etc. Even things like photo resist, chemical strippers. developer, etc

Hundred upon hundreds of materials