How much does a 0.75 to 0.99ct E SI2 lab grown heart diamond cost?

As of November 2026, 0.75 to 0.99ct E SI2 lab grown heart diamonds typically cost €140 EUR to €453 EUR, with a median price of €273 EUR. There are currently 2 diamonds matching this specification available across retailers.

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

About 50% of these diamonds are available at multiple retailers, with an average price spread of 86%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct E SI2 Lab Grown Heart

Quick answer

As of November 2026, there are 2 lab grown heart diamonds with E color and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €140 EUR to €453 EUR, with a median of €273 EUR. At least 18 retailers stock this exact specification, and 50% of the stones appear at more than one of them, with an average price spread of 86%. Half of all listings fall between €181 EUR and €429 EUR per carat. The same specification in natural form lists at a median of about €1,572 EUR per carat. Over the last 30 days the median price moved +1.4% and the number of listings moved +79.9%.

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 lab grown stones in the index: 421 USD per carat, -1.8% 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

€130 EUR

Highest Price

€767 EUR

Average Price

€290 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

50.0%

Price Spread

86.3%

30-Day Price Trend

+1.4%

30-Day Supply Change

+79.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$321/ct

10th Percentile

$172

Median

$321

90th Percentile

$633

Score Distribution

4 diamonds scored across 3 quality tiers

Excellent

2 (50.0%)

Good

1 (25.0%)

Average

1 (25.0%)

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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