A cut and polished ruby that remains unmounted falls under subheading 710391, which covers rubies, sapphires, and emeralds that are cut but not set. Once the stone is set into a mounting or incorporated into a jewelry article, it moves out of heading 7103 entirely.

Certain organic gem materials — notably coral and some shell-based stones — may be subject to CITES restrictions depending on species. Importers should verify the species of any organic gemstone and obtain the required CITES permits before shipment. Conventional mineral gemstones such as rubies, sapphires, and emeralds are not CITES-listed, but country-of-origin documentation is still advisable for compliance and valuation purposes.