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HSChapter 71
U.S. imports of diamond dust and powder, natural and synthetic (HS 710510) totaled $2.2M in April 2026, traded with 15 countries.
Importers of Diamond Dust and Powder, Natural and Synthetic paid $209K in duties in April 2026 — an effective duty rate of 9.7% on $2.2M in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataDiamond abrasive in powder and dust form — both natural and synthetic — is a critical industrial input for grinding wheels, lapping compounds, wire saws, and precision polishing operations across the semiconductor, optics, and stone-processing industries. The US tariff schedule subdivides this heading extensively by origin (natural vs. synthetic) and mesh size, with lines distinguishing natural powder (7105100011 for 80 mesh or finer, 7105100015 for over 80 mesh), metal-coated synthetic powder (7105100020), and uncoated synthetic powder by mesh size (7105100030 and 7105100050). China is by far the dominant supplier of synthetic diamond powder, and imports from China are subject to Section 301 tariffs, making mesh-size and coating specifications commercially significant for both classification and duty-cost planning.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The US tariff lines under 7105.10 differentiate natural diamond powder at the 80-mesh threshold (7105100011 for 80 mesh or finer; 7105100015 for over 80 mesh) and similarly split uncoated synthetic powder (7105100030 for 80 mesh or finer; 7105100050 for over 80 mesh). Importers must specify the mesh or micron size on commercial documentation to support the correct 10-digit classification, as misclassification between these lines can affect duty liability.
Metal-coated synthetic diamond powder (7105100020) has individual diamond particles encapsulated in a metallic coating — typically nickel or copper — to improve bonding in resin or metal-matrix tools and to enhance thermal stability. Uncoated synthetic powder is classified under separate lines. The coating is a processing distinction that must be declared, as it determines the applicable tariff line and can affect Section 301 duty exposure.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $1.4M | $533K | -$818K |
| JAPAN | $229K | $1.3M | +$1.1M |
| SINGAPORE | -- | $525K | +$525K |
| KOREA, SOUTH | -- | $449K | +$449K |
| CANADA | -- | $421K | +$421K |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 7105100050 | SYN DIAMD DUST OR PWDR,NOT CTD W METAL, OVR 80MESH | $1.5M | 6.04% | $89K |
| 7105100030 | DIAMD DUST OR PWDR,SYN,NOT CTDW MTL,80MESH ORFINER | $513K | 21.95% | $113K |
| 7105100020 | SYNTHETIC DIAMOND DUST OR POWDER, COATED WTH METAL | $133K | 3.57% | $5K |
| 7105100015 | DIAM PWDR DST NATRL OV 80 MESH | $45K | 6.57% | $3K |
| 7105100011 | DIAM PWDR DST NTRL 80 MS OR LESS | $0 | -- | -- |
SYN DIAMD DUST OR PWDR,NOT CTD W METAL, OVR 80MESH
DIAMD DUST OR PWDR,SYN,NOT CTDW MTL,80MESH ORFINER
SYNTHETIC DIAMOND DUST OR POWDER, COATED WTH METAL
DIAM PWDR DST NATRL OV 80 MESH
DIAM PWDR DST NTRL 80 MS OR LESS
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 7105100025 | DIAMOND DUST OR POWDER SYNTHETIC | $4.3M |
| 7105100010 | DIAMOND DUST OR POWDER, NATURAL | $35K |
DIAMOND DUST OR POWDER SYNTHETIC
8.1M car
DIAMOND DUST OR POWDER, NATURAL
45.4K car
GOLD, NONMONETARY, UNWROUGHT NESOI
HS 710812
SILVER, UNWROUGHT NESOI
HS 710691
JEWELRY AND PARTS THEREOF, OF OTH PRECIOUS METAL
HS 711319
OTH PREC METL ARTCLS OR ARTCLS CLAD W PM, NESOI
HS 711590
RHODIUM, UNWROUGHT OR IN POWDER FORM
HS 711031
DIAMONDS, NONINDUSTRIAL, WORKED
HS 710239
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CLEVELAND, OH | $731K | $896K | +$165K |
| NEW ORLEANS, LA | $182K | $1.4M | +$1.3M |
| LOS ANGELES INTERNATIONAL AIRPORT, CA | $69K | $1.2M | +$1.1M |