North American Product Classification System (NAPCS) Canada 2017 Version 1.0

163 - Diamonds and other non-metallic minerals (except cut gemstones)

This group comprises diamonds and other non-metallic minerals, except cut gemstones.

16311 - Uncut and industrial diamonds

This class comprises uncut and industrial diamonds.

16312 - Non-metallic minerals (except diamonds)

This class comprises non-metallic minerals, except diamonds.