How much does a 0.50 to 0.74ct F SI1 lab grown heart diamond cost?

As of October 2026, 0.50 to 0.74ct F SI1 lab grown heart diamonds typically cost HK$938 HKD to HK$4,551 HKD, with a median price of HK$3,073 HKD. There are currently 8 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 68%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct F SI1 Lab Grown Heart

Quick answer

As of October 2026, there are 8 lab grown heart diamonds with F colour and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run HK$938 HKD to HK$4,551 HKD, with a median of HK$3,073 HKD. At least 21 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 68%. Half of all listings fall between HK$2,768 HKD and HK$5,617 HKD per carat. The same specification in natural form lists at a median of about HK$8,864 HKD per carat. Over the last 30 days the median price moved -8.1% and the number of listings moved +57.7%.

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$910 HKD

Highest Price

HK$10,015 HKD

Average Price

HK$2,707 HKD

Market Intelligence

Retailers Selling

Cross Retailer %

34.8%

Price Spread

68.5%

30-Day Price Trend

-8.1%

30-Day Supply Change

+57.7%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$530/ct

10th Percentile

$228

Median

$530

90th Percentile

$872

Score Distribution

14 diamonds scored across 4 quality tiers

Excellent

4 (28.6%)

Very Good

1 (7.1%)

Good

6 (42.9%)

Average

3 (21.4%)

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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