Product classification
HS code for Uncut synthetic stones: 7104.29
Stones, synthetic or reconstructed precious or semi-precious n.e.c. in heading 7104, unworked or simply sawn or roughly shaped.
Classification of uncut synthetic stones under HS 7104.29
HS code 710429 applies to synthetic or reconstructed precious and semi-precious stones, excluding diamonds, that are unworked or have only been roughly shaped or sawn. Synthetic stones are chemically and physically identical to their natural counterparts but are created in controlled environments. Reconstructed stones are formed by fusing together fragments of natural stones, often under high heat and pressure. This code is used for the raw materials of the synthetic gemstone industry, such as large boules of sapphire or ruby produced by the Verneuil process. These materials are destined for further cutting and polishing into finished gems or for use in industrial applications like laser components or watch bearings. The classification is distinct from natural stones (7103) and synthetic diamonds (710421). It requires clear identification of the stone's origin to ensure it is not misclassified as a natural mineral. Reconstructed stones, sometimes called pressed stones, are often confused with glass imitations. However, if the material is chemically identical to a natural stone, it remains in 7104. If it is merely glass, it falls under 7018. This code is vital for maintaining the integrity of the gemstone market by separating lab-created materials from natural ones and is essential for the electronics and precision instrument industries.
- Covers
- Synthetic ruby boules (unworked)
- Lab-grown sapphire rough
- Unworked synthetic emeralds
- Sawn synthetic quartz blocks
- Reconstructed turquoise or lapis blocks
- Also under 7104.29
- Charles & Colvard (moissanite)
- Chatham Created Gems (synthetic emeralds/rubies)
- various industrial diamond manufacturers
- Element Six (synthetic diamonds)
Codes often confused with 7104.29
Common mistake. Common misclassifications include 710499, which is for worked (cut/polished) synthetic stones, and 710310, which is for natural unworked stones. Synthetic diamonds must be placed in 710421, not 710429. Glass imitations are classified under 7018.
Top exporters and importers of HS 710429 (the code used for uncut synthetic stones), 2025
In 2025, the largest exporter of HS 710429 (the code used for uncut synthetic stones) in UN Comtrade data was Switzerland, with 30% of world exports; the largest importer in UN Comtrade data was Switzerland, with 27% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 710429, not only uncut synthetic stones.
Top exporters 2025 · share of world exports
- 1 Switzerland $19M 30% of world exports
- 2 France $10M 16% of world exports
- 3 Japan $8.6M 13% of world exports
World total: $64M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Switzerland $15M 27% of world imports
- 2 India $12M 23% of world imports
- 3 Hong Kong $6.9M 13% of world imports
World total: $53M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for uncut synthetic stones
Brazil classifies uncut synthetic stones under NCM 7104.29.00: HS 7104.29 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about uncut synthetic stones
What is the HS code for Uncut synthetic stones?
The HS code for Uncut synthetic stones is 710429 (Stones; synthetic or reconstructed precious or semi-precious n.e.c. in heading 7104, unworked or simply sawn or roughly shaped). The HS code for unworked or roughly shaped synthetic or reconstructed stones (excluding diamonds) is 710429.
How do I classify Uncut synthetic stones for customs?
Uncut synthetic stones is classified under HS code 710429 — Stones; synthetic or reconstructed precious or semi-precious n.e.c. in heading 7104, unworked or simply sawn or roughly shaped. This is a 6-digit subheading level code.
What are reconstructed stones?
Reconstructed stones are made by fusing fragments of natural precious or semi-precious stones into a single mass, usually through heat and pressure.
Which countries are the top exporters of uncut synthetic stones (HS 710429)?
In 2025, the top exporters of HS 710429 (the code used for uncut synthetic stones) in UN Comtrade data were Switzerland ($19M, 30% of world exports), France ($10M) and Japan ($8.6M). World exports came to about $64M, 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.
Which countries are the top importers of uncut synthetic stones (HS 710429)?
In 2025, the top importers of HS 710429 (the code used for uncut synthetic stones) in UN Comtrade data were Switzerland ($15M, 27% of world imports), India ($12M) and Hong Kong ($6.9M). World imports came to about $53M, 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.
Is the HS code for Uncut synthetic stones the same in all countries?
The base HS code 710429 for Uncut synthetic stones is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for uncut synthetic stones in Brazil?
In Brazil, uncut synthetic stones (HS 710429) is classified under NCM 7104.29.00.