How much does a 1.00 to 1.49ct J I1 natural heart diamond cost?

As of November 2026, 1.00 to 1.49ct J I1 natural heart diamonds typically cost €1,404 EUR to €3,185 EUR, with a median price of €2,280 EUR. There are currently 12 diamonds matching this specification available across retailers.

Where can I find the best price on a J I1 heart diamond?

About 9% of these diamonds are available at multiple retailers, with an average price spread of 22%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J I1 Natural Heart

Quick answer

As of November 2026, there are 12 natural heart diamonds with J colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,404 EUR to €3,185 EUR, with a median of €2,280 EUR. At least 18 retailers stock this exact specification, and 9% of the stones appear at more than one of them, with an average price spread of 22%. Half of all listings fall between €1,549 EUR and €1,912 EUR per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +4.2%.

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: November 2026

Available

Lowest Price

€836 EUR

Highest Price

€4,009 EUR

Average Price

€2,313 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

8.7%

Price Spread

21.9%

30-Day Price Trend

+0.1%

30-Day Supply Change

+4.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,847/ct

10th Percentile

$1,548

Median

$1,847

90th Percentile

$2,617

Score Distribution

154 diamonds scored across 4 quality tiers

Excellent

2 (1.3%)

Very Good

7 (4.5%)

Good

5 (3.2%)

Average

140 (90.9%)

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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