How much does a 3.00 to 4.99ct E SI1 lab grown heart diamond cost?

As of October 2026, 3.00 to 4.99ct E SI1 lab grown heart diamonds typically cost HK$3,833 HKD to HK$19,776 HKD, with a median price of HK$9,190 HKD. There are currently 17 diamonds matching this specification available across retailers.

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

About 46% of these diamonds are available at multiple retailers, with an average price spread of 103%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct E SI1 Lab Grown Heart

Quick answer

As of October 2026, there are 17 lab grown heart diamonds with E colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run HK$3,833 HKD to HK$19,776 HKD, with a median of HK$9,190 HKD. At least 34 retailers stock this exact specification, and 46% of the stones appear at more than one of them, with an average price spread of 103%. Half of all listings fall between HK$1,618 HKD and HK$4,784 HKD per carat. The same specification in natural form lists at a median of about HK$85,615 HKD per carat. Over the last 30 days the median price moved -8.9% and the number of listings moved +22.7%.

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: October 2026

Available

Lowest Price

HK$3,232 HKD

Highest Price

HK$45,317 HKD

Average Price

HK$11,337 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

45.7%

Price Spread

103.2%

30-Day Price Trend

-8.9%

30-Day Supply Change

+22.7%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$391/ct

10th Percentile

$154

Median

$391

90th Percentile

$955

Score Distribution

47 diamonds scored across 4 quality tiers

Excellent

16 (34.0%)

Very Good

6 (12.8%)

Good

4 (8.5%)

Average

21 (44.7%)

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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