Diamond Index

The diamond index is updated every hour. The percent of change displayed is with reference to yesterday's closing time (24:00 EST).

Determining the price of a diamond or its value involves many of the factors we discuss on our diamond grading page. These include the 4 Cs (carat weight, cut, color, and clarity), and other factors are also taken into account such as polish, symmetry, fluorescence and shape. 

Updated Friday, April 1, 2022, diamond prices moved HIGHER by an average of 0.8% in March 2022. The average price per carat of all diamonds in our database was $13,208.77, up from $13,101.95 a month ago.

Please note: The diamond price chart above differentiate between qualities of diamonds, it provides a summary of 0.001 carat weight ranges only.

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