How much does a 1.50 to 1.99ct E SI1 natural heart diamond cost?

As of October 2026, 1.50 to 1.99ct E SI1 natural heart diamonds typically cost $6,856 CAD to $22,415 CAD, with a median price of $12,711 CAD. There are currently 87 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 49%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct E SI1 Natural Heart

Quick answer

As of October 2026, there are 87 natural heart diamonds with E color and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $6,856 CAD to $22,415 CAD, with a median of $12,711 CAD. At least 55 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 49%. Half of all listings fall between $5,457 CAD and $8,773 CAD per carat. The same specification in lab grown form lists at a median of about $475 CAD per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +10.2%.

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

Lowest Price

$4,755 CAD

Highest Price

$34,566 CAD

Average Price

$13,865 CAD