Chapter 71 — Natural or cultured pearls, precious or semiprecious stones,precious metals, metals clad with precious metal and articles thereof; imitation jewelry; coin

Heading 7112 — Waste and scrap of precious metal or of metal clad with precious metal; other waste and scrap containing precious metal or precious metal compounds, of a kind used principally for the recovery of precious metal other than goods of heading 85.49

National subdivision 7112.9 — Other:

Subheading 7112.91 — Of gold, including metal clad with gold but excluding sweepings containing other precious metals