ASYCUDA
  Online Harmonised Commodities Code database

You can enter a keyword or the first few digits from the commodity code, e.g. enter "book" to view commodities with the word book in the description, or enter"490" to view commodities whose code begins with 490.  Commodity codes can be as general as 1 digit or as specific as 6.

Commodities with Heading Code: 7103

Commodity Code Description
Section 14 : Natural or cultured pearls, precious or semi-precious stones, precious metals, metals clad with precious metal and articles thereof; imitation jewellery; coin
   Chapter 71 : Natural or cultured pearls, precious or semi-precious stones, precious metals, metals clad with precious metal and articles thereof; imitation jewellery; coin
     Heading 7103 : Precious stones (excl. diamonds) and semi-precious stones, not set...
710310 Precious (excl. diamonds) or semi-precious stones, unworked
710391 Rubies, sapphires and emeralds, worked but not set...
710399 Precious or semi-precious stones, worked but not set..., nes