U.S. flag

An official website of the United States government

Department of Labor Logo United States Department of Labor
Dot gov

The .gov means it's official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Import/Export Price Indexes
Bureau of Labor Statistics > Import/Export Price Indexes > Home

Measuring Price Change for Diamonds in the U.S. Import and Export Price Indexes

The Bureau of Labor Statistics (BLS) U.S. Import and Export Price Indexes include measures of price change for diamonds. BLS first began to publish the index for diamonds in 1992. All estimates are subject to revision in each of the 3 months after original publication to reflect the availability of additional information.

Sample Design and Selection

To create the U.S. Import and Export Price Indexes, BLS selects a sample of establishments based upon their relative trade value in imports and exports during the course of a year. Diamond import and export indexes are calculated using a combination of the import/export sampling methodology and a subset of data from an independent diamond industry resource.

Pricing

Monthly pricing data for diamonds are obtained directly from survey respondents, as well as from an independent diamond industry resource. Some diamond prices are used in both the import and export price indexes because of their global commodity nature, while other select diamond prices may only be used in either the import or export indexes. BLS uses High Cash New York Asking Prices. The diamond pricing data obtained from the independent diamond industry resource are round brilliant cut diamonds. These prices supplement directly collected data and provide an estimated value for diamonds based on their carat size, color grade, and clarity.

Access the Data

The most recent data for this industry can be found in the U.S. Import and Export Price Indexes Economic News Release (https://www.bls.gov/news.release/ximpim.toc.htm). These data are available in a variety of formats on the BLS website (https://www.bls.gov/mxp).

Additional Information

Additional information on the U.S. Import and Export Price Indexes can be found in the BLS Handbook of Methods. This section of the handbook also can be accessed on the BLS Internet site (https://www.bls.gov/mxp) under the topic "MXP Methods." You may contact the International Price Program of the BLS by telephone at (202) 691-7101 or by email.

Information in this report is in the public domain and may be reproduced without permission. This information is available to sensory impaired individuals upon request. Voice phone: (202) 691-5200; TDD Phone: (202) 691-5200; TDD message referral phone: 1-800-877-8339.

Last Modified Date: March 21, 2025