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

As of November 2026, 1.00 to 1.49ct I I1 natural heart diamonds typically cost €1,290 EUR to €3,275 EUR, with a median price of €2,299 EUR. There are currently 24 diamonds matching this specification available across retailers.

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

About 9% of these diamonds are available at multiple retailers, with an average price spread of 35%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I I1 Natural Heart

Quick answer

As of November 2026, there are 24 natural heart diamonds with I color and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,290 EUR to €3,275 EUR, with a median of €2,299 EUR. At least 21 retailers stock this exact specification, and 9% of the stones appear at more than one of them, with an average price spread of 35%. Half of all listings fall between €1,411 EUR and €2,021 EUR per carat. The same specification in lab grown form lists at a median of about €635 EUR per carat. Over the last 30 days the median price moved -0.2% and the number of listings moved +7.4%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Heart natural stones in the index: 2,289 USD per carat, -3.7% 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

€639 EUR

Highest Price

€4,067 EUR

Average Price

€2,348 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

9.3%

Price Spread

35.3%

30-Day Price Trend

-0.2%

30-Day Supply Change

+7.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,937/ct

10th Percentile

$1,080

Median

$1,937

90th Percentile

$2,818

Score Distribution

184 diamonds scored across 4 quality tiers

Excellent

8 (4.3%)

Very Good

10 (5.4%)

Good

7 (3.8%)

Average

159 (86.4%)

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Consider Instead

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

J I1J colour is visually identical to I to the naked eye

Save 5%

Lab-Grown I I1Same specifications, lab-grown origin

Save 63%

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