How much does a 1.00 to 1.49ct E SI1 natural heart diamond cost?

As of October 2026, 1.00 to 1.49ct E SI1 natural heart diamonds typically cost $1,667 USD to $5,131 USD, with a median price of $2,289 USD. There are currently 250 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI1 heart diamond?

About 39% of these diamonds are available at multiple retailers, with an average price spread of 52%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct E SI1 Natural Heart

Quick answer

As of October 2026, there are 250 natural heart diamonds with E color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,667 USD to $5,131 USD, with a median of $2,289 USD. At least 64 retailers stock this exact specification, and 39% of the stones appear at more than one of them, with an average price spread of 52%. Half of all listings fall between $2,041 USD and $3,317 USD per carat. The same specification in lab grown form lists at a median of about $358 USD per carat. Over the last 30 days the median price moved -3.2% and the number of listings moved +11.0%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, September 2026: natural diamonds at 2,335 USD per carat and lab-grown at 443 USD per carat, a natural to lab ratio of 5.3 to 1. Heart natural stones in the index: 2,374 USD per carat, +9.8% month on month. See the full index release

Figures come from current listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: October 2026

Available

250

Lowest Price

$1,148 USD

Highest Price

$13,602 USD

Average Price

$2,960 USD