Subheading 710110: Pearls; Natural, whether or not Worked or Graded (but not Strung, Mounted or … etc.
Subheading 710121: Pearls; Cultured, Unworked, whether or not Graded (but not Strung, … etc.
Subheading 710122: Pearls; Cultured, Worked, whether or not Graded (but not Strung, … etc.