Precious (excluding diamond) and semi-precious stone; worked, graded, not strung, mounted, set; ungraded precious (excluding diamond) and semi-precious stone, temporarily strung for convenience of transport

Stones; precious (other than diamonds) and semi-precious stones, unworked or simply sawn or roughly shaped, not strung, mounted or set

Stones; rubies, sapphires and emeralds, worked (other than simply sawn or roughly shaped), not strung, mounted or set

Stones; precious (other than diamonds) and semi-precious stones, (other than rubies, sapphires and emeralds), worked other than simply sawn or roughly shaped, not strung, mounted or set