How much does a 1.00 to 1.49ct J SI2 natural heart diamond cost?

As of October 2026, 1.00 to 1.49ct J SI2 natural heart diamonds typically cost $1,158 USD to $3,546 USD, with a median price of $2,235 USD. There are currently 208 diamonds matching this specification available across retailers.

Where can I find the best price on a J SI2 heart diamond?

About 38% of these diamonds are available at multiple retailers, with an average price spread of 67%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J SI2 Natural Heart

Quick answer

As of October 2026, there are 208 natural heart diamonds with J color and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,158 USD to $3,546 USD, with a median of $2,235 USD. At least 47 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 67%. Half of all listings fall between $1,326 USD and $2,487 USD per carat. Over the last 30 days the median price moved -5.3% and the number of listings moved +17.1%.

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

208

Lowest Price

$832 USD

Highest Price

$7,853 USD

Average Price

$2,318 USD

Market Intelligence

Retailers Selling

Cross Retailer %

37.6%

Price Spread

67.0%

30-Day Price Trend

-5.3%

30-Day Supply Change

+17.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,733/ct

10th Percentile

$1,154

Median

$1,733

90th Percentile

$3,169

Score Distribution

587 diamonds scored across 4 quality tiers

Excellent

72 (12.3%)

Very Good

78 (13.3%)

Good

128 (21.8%)

Average

309 (52.6%)

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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