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

As of November 2026, 1.00 to 1.49ct D SI1 natural heart diamonds typically cost €1,558 EUR to €4,961 EUR, with a median price of €2,177 EUR. There are currently 235 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 55%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D SI1 Natural Heart

Quick answer

As of November 2026, there are 235 natural heart diamonds with D colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €1,558 EUR to €4,961 EUR, with a median of €2,177 EUR. At least 63 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 55%. Half of all listings fall between €1,820 EUR and €3,028 EUR per carat. The same specification in lab grown form lists at a median of about €319 EUR per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +6.1%.

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: November 2026

Available

235

Lowest Price

€1,047 EUR

Highest Price

€11,171 EUR

Average Price

€2,791 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

39.9%

Price Spread

54.5%

30-Day Price Trend

-1.5%

30-Day Supply Change

+6.1%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,474/ct

10th Percentile

$1,787

Median

$2,474

90th Percentile

$4,679

Score Distribution

672 diamonds scored across 4 quality tiers

Excellent

146 (21.7%)

Very Good

135 (20.1%)

Good

152 (22.6%)

Average

239 (35.6%)

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Consider Instead

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

D SI2SI2 inclusions are not visible without magnification

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Lab-Grown D SI1Same specifications, lab-grown origin

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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