HS Code 05.08 – Coral and similar materials, unworked or simply prepared, shells of molluscs, crustaceans or echinoderms and cuttle-bone, not cut to shape powder and waste thereof

HS code 0508 is a 4-digit heading in the Harmonized System that covers: Coral and similar materials, unworked or simply prepared, shells of molluscs, crustaceans or echinoderms and cuttle-bone, not cut to shape powder and waste thereof. HS Code 0508 covers 'Coral and similar materials, unworked or simply prepared but not cut to shape; shells of molluscs, crustaceans or echinoderms and cuttle-bone, not cut to shape; powder and waste thereof.' This heading is dedicated to natural marine-derived materials in their raw or minimally processed forms, specifically excluding items that have been shaped or manufactured into articles. The scope includes various types of coral (e.g., red, white), unpolished shells from a wide array of marine creatures (molluscs like oysters and conchs, crustaceans like crabs, and echinoderms like sea urchins), and cuttlebone. Powder and waste generated from these materials also fall within this classification. This heading is particularly important for trade compliance due to environmental concerns and the conservation status of certain corals, which are often protected under CITES. Importers and exporters must verify the legality of sourcing and adhere to specific documentation requirements. These materials have historical significance in decorative arts, jewelry making, and traditional medicine, as well as industrial uses (e.g., calcium supplements from shells). Its placement in Section I, Chapter 5, groups it with other non-food animal products, emphasizing its raw material status before extensive manufacturing. Understanding the 'unworked or simply prepared' boundary is critical to avoid misclassification with finished goods.

Raw red coral branches, white coral fragments, unpolished conch shells, abalone shells (raw), oyster shells (cleaned), clam shells (whole), scallop shells (unprocessed), snail shells, sea urchin shells, dried crab shells, cuttlebone (whole), coral gravel, shell powder for industrial use, coral waste, shell fragments, unpolished nautilus shells, mother-of-pearl shells (unworked).

A frequent misclassification error involves distinguishing between raw materials in 0508 and finished articles. For example, carved coral jewelry or polished shell cameos belong to Chapter 71 ('Natural or cultured pearls, precious or semi-precious stones, precious metals...') or Chapter 96 ('Miscellaneous manufactured articles'), respectively, not 0508. The key is whether the product has been 'cut to shape' or further worked beyond simple cleaning or rough preparation. Another common mistake is with ground shells used as animal feed supplements. While raw shell powder might fit here, if specifically prepared and marketed as a feed additive, it might lean towards Chapter 23 ('Residues and waste from the food industries; prepared animal fodder').

In 2025, the top exporters of HS code 0508 in UN Comtrade data were Japan ($30M, 21% of world exports), Indonesia ($18M) and the Netherlands ($9.2M). World exports came to about $143M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

In 2025, the top importers of HS code 0508 in UN Comtrade data were China ($30M, 22% of world imports), France ($15M) and the United States ($11M). World imports came to about $138M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.

HS code 0508 is a 4-digit heading under Chapter 05 of the Harmonized System. The first 2 digits (05) identify the chapter, and digits 3-4 (08) specify the heading. This code contains multiple 6-digit subheadings for precise product classification.