HS Code 7102.21
Diamonds; industrial, unworked or simply sawn, cleaved or bruted, but not mounted or set
7102.21.10
General Duty: Free
Miners' diamonds, unworked or simply sawn, cleaved or bruted
7102.21.10.10
CRT
Carbonados
7102.21.10.20
CRT
Other
7102.21.30.00
CRT
General Duty: Free
Industrial diamonds (other than miners' diamonds), simply sawn, cleaved or bruted
7102.21.40.00
CRT
General Duty: Free