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

As of September 2026, 1.00 to 1.49ct J SI1 natural heart diamonds typically cost $1,862 CAD to $5,260 CAD, with a median price of $2,845 CAD. There are currently 659 diamonds matching this specification available across retailers.

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1.00 to 1.49ct J SI1 Natural Heart

Quick answer

As of September 2026, there are 659 natural heart diamonds with J color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,862 CAD to $5,260 CAD, with a median of $2,845 CAD. At least 49 retailers stock this exact specification. Half of all listings fall between $2,073 CAD and $3,043 CAD per carat. The same specification in lab grown form lists at a median of about $2,019 CAD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart natural stones in the index: 2,261 USD per carat, +1.7% month on month. See the full index release

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

Last updated: September 2026

Available

659

Lowest Price

$1,037 CAD

Highest Price

$9,236 CAD

Average Price

$3,204 CAD

Market Intelligence

Retailers Selling

Price Spread

39.6%

Price Range

Price per carat distribution across retailers

$1,768/ct

10th Percentile

$1,298

Median

$1,768

90th Percentile

$2,760

Score Distribution

659 diamonds scored across 4 quality tiers

Excellent

51 (7.7%)

Very Good

168 (25.5%)

Good

162 (24.6%)

Average

278 (42.2%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J SI2SI2 inclusions are not visible without magnification

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Lab-Grown J SI1Same specifications, lab-grown origin

Save 22%

Related Specifications

D IF D VVS1 D VVS2 D VS1 D VS2 D SI1 E IF E VVS1 E VVS2 E VS1 E VS2 E SI1 F IF F VVS1 F VVS2 F VS1 F VS2 F SI1 G IF G VVS1 G VVS2 G VS1 G VS2 G SI1 H IF H VVS1 H VVS2 H VS1 H VS2 H SI1 I IF I VVS1 I VVS2 I VS1 I VS2 I SI1