Jewel means an organic substance with gem quality market-recognized beauty, rarity, and value, and includes pearl, amber, and coral.
31 CFR § 1027.100
Refer to 1010.100 of this chapter for general definitions not noted herein. To the extent there is a differing definition in 1010.100 of this chapter, the definition in this section is what applies to part 1027. Unless otherwise indicated, for purposes of this part: