An Advance Licence may be granted for the duty free import of:
(a) Gold of fineness not less than 0.995 and mountings, sockets,
frames and findings of 8 carats and above;
(b) Silver of fineness not less than 0.995 and mountings, sockets,
frames and findings containing more than 50% silver by
weight;
(c) Platinum of fineness not less than 0.900, mountings, sockets,
frames and findings containing more than 50% platinum by
weight.