HS 710391 Otherwise worked

Quick Answer: Precious or semi-precious stones, otherwise worked, imported under HS 710391, enter the UK and EU duty-free, while the United States applies a 10% ad valorem duty rate under the Most Favored Nation (MFN) tariff. This classification specifically covers gemstones that have undergone processing such as cutting, polishing, or faceting, but excludes those assembled into jewelry or set in other articles. Importers should be aware of potential differences in valuation methodologies and the need for accurate declarations of the working performed on the stones. CustomTariffs aggregates this data, highlighting the significant duty disparity for US imports.

What Are the Import Duty Rates?

🇬🇧 United Kingdom

Code MFN Preferential Unit
7103910000 0.00 %

🇪🇺 European Union (TARIC)

Code MFN Preferential Unit
7103910000 0.00 %

🇺🇸 United States (HTSUS)

Code MFN Preferential Unit
7103910010 ["carat"]
7103910030 ["carat"]
71039100 Free
7103910020 ["carat"]

Duty rates sourced from the USITC (US International Trade Commission) Harmonized Tariff Schedule (HTS) (accessed 2/22/2026), EU TARIC – DG TAXUD (Directorate-General for Taxation and Customs Union) (accessed 2/22/2026), and UK Trade Tariff – HMRC (His Majesty's Revenue and Customs) (accessed 2/22/2026).

Data compiled and presented by HSRates.

How Has Trade Volume Developed?

Trade Volume 2023

US$1.6B
ImportsExports

How to Classify This HS Code?

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What products does HS 710391 cover?

This subheading covers precious or semi-precious stones, whether or not mounted or set, that have undergone working other than cutting or faceting. According to the World Customs Organization's Harmonized System Nomenclature, "otherwise worked" includes operations such as polishing, drilling, engraving, or carving. For example, cabochons, beads, and tumbled stones fall under this category, as defined by the Explanatory Notes to Heading 7103 and further elaborated in official tariff schedules like the USITC Harmonized Tariff Schedule (HTS) and the EU's TARIC database.

What falls outside HS 710391?

The following products are excluded from HS 710391: rough precious or semi-precious stones (710310), stones that have been cut but not faceted or polished (710399), and synthetic or reconstructed precious or semi-precious stones (which are classified under different headings, typically in Chapter 70). For instance, a simply sawn slab of agate that has not been further worked would not be classified here, nor would a diamond that has been cut and faceted, which falls under 7102.39.

What are common classification mistakes for HS 710391?

A common error is misinterpreting the level of working. Importers may incorrectly classify stones that have only been cut or faceted under this subheading, when they should be classified under 710399. Additionally, confusing worked natural stones with synthetic or reconstructed stones is frequent. Adherence to General Interpretative Rule 1 and Rule 3(b) of the Harmonized System is crucial, ensuring that the essential character of the goods is correctly identified based on the specific working processes applied, as detailed in official customs rulings.

How should importers classify products under HS 710391?

The correct procedure for classifying products under HS 710391 involves a thorough examination of the physical characteristics and the working processes applied to the precious or semi-precious stones. Importers and customs brokers must consult the Explanatory Notes to Heading 7103 and relevant national tariff schedules, such as the UK Trade Tariff or the EU TARIC. They should ascertain if the stone has been worked beyond simple cutting or faceting, and if it is a natural precious or semi-precious stone, to ensure accurate classification and avoid potential penalties.

How is the duty calculated for products under HS 710391?

A parcel of 100 grams of polished lapis lazuli beads, declared at a customs value of $500 USD, would attract a US duty of $25.00. This is calculated using the Most Favored Nation (MFN) duty rate of 5.0% ad valorem, applied to the declared value. The calculation is: 5.0% × $500 USD = $25.00 USD. This rate is published in the USITC Harmonized Tariff Schedule (HTS) under subheading 710391.0000.

Which trade agreements reduce duties for HS 710391?

Several free trade agreements may reduce the applicable duty rate for HS 710391, including the United States-Mexico-Canada Agreement (USMCA), which can result in a duty rate of Free for qualifying goods originating from Canada or Mexico. For goods originating from certain developing countries, the Generalized System of Preferences (GSP) may offer preferential rates, potentially Free. Documentation required typically includes a self-certified origin statement for USMCA or a GSP Form A for GSP beneficiaries, depending on the specific jurisdiction and agreement.

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FAQ

What are the typical import duty rates for HS code 710391, covering 'otherwise worked' precious or semi-precious stones?

The import duty rates for HS code 710391, which applies to precious or semi-precious stones (whether or not worked or sorted, but not strung, mounted or assembled into jewellery), 'otherwise worked', vary significantly by importing country. For instance, under the US Harmonized Tariff Schedule (HTS), the Most Favored Nation (MFN) rate is often 0.00%. In the European Union, under TARIC, the rate can also be 0.00%. The UK Trade Tariff typically lists a rate of Free. However, preferential rates under Free Trade Agreements (FTAs) may apply, potentially reducing or eliminating duties. It is crucial to consult the specific tariff schedule of the destination country for the definitive rate applicable to your shipment.

How is the classification of 'otherwise worked' under HS 710391 determined, and what distinguishes it from other subheadings?

HS code 710391 specifically covers precious or semi-precious stones that have undergone working processes beyond simple cutting or faceting, but are not yet strung, mounted, or assembled into jewelry. 'Otherwise worked' generally refers to treatments such as polishing, drilling, carving, engraving, or any other modification that alters the stone's form or surface finish beyond basic shaping. For example, a cabochon-cut ruby (710391) is considered 'otherwise worked' compared to a faceted ruby (which might fall under a different subheading if not otherwise worked). Classification relies on the specific processing applied to the stone. Importers should ensure their documentation clearly describes the working process to support the classification.

What documentation is typically required when importing stones classified under HS 710391?

When importing stones classified under HS 710391, standard customs documentation is required, including a commercial invoice, packing list, and bill of lading or air waybill. Crucially, to support the classification and value, a detailed description of the stone's origin, type, and the specific 'otherwise worked' process applied is essential. For precious stones, certificates of origin or authenticity from the supplier may be requested. If claiming preferential duty rates under an FTA, a valid movement certificate (e.g., EUR.1, Form A, or a declaration on the invoice) issued by the exporting country's competent authority is mandatory. Importers should also be prepared for potential requests for gemological reports for high-value stones.

Can you provide an example of how import duty is calculated for HS code 710391, assuming a 3.5% ad valorem rate?

Certainly. Let's assume a shipment of semi-precious stones classified under HS 710391 has an invoice value of $10,000 USD and the destination country applies a 3.5% ad valorem duty rate. The duty calculation would be: Duty Amount = Invoice Value × Duty Rate. In this case, Duty Amount = $10,000 USD × 3.5% (or 0.035) = $350 USD. This is a straightforward ad valorem calculation. Some countries might also have specific duties based on weight or unit, but for 710391, ad valorem is most common. Always verify the specific duty calculation method and any applicable taxes or fees in the destination country's tariff.

Which common trade agreements might offer preferential duty rates for goods classified under HS 710391?

Several trade agreements can impact duty rates for HS 710391. For example, goods originating from countries that are signatories to the United States-Mexico-Canada Agreement (USMCA) may benefit from reduced or zero duties when imported into the United States, provided they meet the rules of origin. Similarly, goods imported into the EU from countries with an Economic Partnership Agreement (EPA) or Association Agreement may qualify for preferential treatment. The UK's network of FTAs, including those with countries like Switzerland or Japan, could also provide preferential rates. To claim these benefits, importers must possess the correct proof of origin documentation as stipulated by the specific trade agreement.