Datasetpublic

JacobiusMakes/lab-grown-diamond-import-monitor

US Lab-Grown Diamond Import Monitor A reproducible monthly dataset on United States imports of loose cut laboratory-grown diamonds. The primary series uses US Census Bureau HTS 7104.91.10.00 data. UN Comtrade HS 710491 data provides a partner-country cross-check. The primary series covers stones cut but not set, suitable for jewelry manufacture. It excludes diamonds imported already set in finished jewelry and rough diamonds. It therefore does not measure total lab-grown diamond… See the full description on the dataset page: https://huggingface.co/datasets/JacobiusMakes/lab-grown-diamond-import-monitor.

sourceHugging Facecc-by-4.0updated 19d agoView on Hugging Face

0likes125downloads

Dataset Card

US Lab-Grown Diamond Import Monitor

A reproducible monthly dataset on United States imports of loose cut laboratory-grown diamonds. The primary series uses US Census Bureau HTS 7104.91.10.00 data. UN Comtrade HS 710491 data provides a partner-country cross-check.

The primary series covers stones cut but not set, suitable for jewelry manufacture. It excludes diamonds imported already set in finished jewelry and rough diamonds. It therefore does not measure total lab-grown diamond inflow. Quantities are pieces, not carats; changes in stone size and quality mix affect the average customs value.

This dataset is published for journalists, researchers, analysts, and developers who need a dated source instead of an unsourced market estimate. It does not describe Stienhardt's sales or inventory.

Latest edition

The September 4, 2026 data edition includes US Census data through July 2026 and UN Comtrade data through June 2026. Census records $27.8 million in July across 1,324,682 stones, up 52 percent from June and down 59 percent from July 2025.

Customs value is not retail price. Average value per stone is not a price index because size and quality mix can change from month to month.

The September 8 documentation update clarifies scope; it does not change the data edition.

Explore the series in the interactive import monitor.

Configurations

—census_monthly: the primary HTS 7104.91.10.00 monthly series, including customs value and quantity in number of stones.
—comtrade_partner_monthly: HS 710491 monthly imports by partner country.
—comtrade_heading_crosscheck: world totals for the relevant HS 7104 family used to test whether the September 2025 break was a simple reclassification.
—latest_release: the compact monthly table used in the current published edition.

Load in Python

python

from datasets import load_dataset

census = load_dataset(
    "JacobiusMakes/lab-grown-diamond-import-monitor",
    "census_monthly",
)
print(census["train"][0])

Each configuration is also available through Hugging Face's browser viewer, Parquet conversion, API, and embed controls.

The repository root also includes a validated Data Package v2 descriptor for all four CSV resources.

Sources and method

—US Census Bureau International Trade API, general imports, HTS 7104.91.10.00.
—UN Comtrade, reporter United States, imports, commodity HS 710491.
—Harmonized Tariff Schedule of the United States for the product definition.

Full methodology and caveats are in METHODOLOGY.md. The source repository includes the pull, build, validation, and chart scripts: JacobiusMakes/lgd-import-monitor.

Citation

Galperin, Jacob. Lab-Grown Import Monitor. September 4, 2026 edition. Stienhardt, New York. CC BY 4.0.

Maintainer

Stienhardt, New York. Corrections and reproducibility issues are welcome through the source repository.