How much does a 0.20 to 0.49ct F SI2 natural heart diamond cost?

As of October 2026, 0.20 to 0.49ct F SI2 natural heart diamonds typically cost $443 AUD to $846 AUD, with a median price of $690 AUD. There are currently 189 diamonds matching this specification available across retailers.

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

About 27% of these diamonds are available at multiple retailers, with an average price spread of 27%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F SI2 Natural Heart

Quick answer

As of October 2026, there are 189 natural heart diamonds with F colour and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $443 AUD to $846 AUD, with a median of $690 AUD. At least 12 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 27%. Half of all listings fall between $1,790 AUD and $2,314 AUD per carat. Over the last 30 days the median price moved -6.2% and the number of listings moved -3.0%.

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: October 2026

Available

189

Lowest Price

$251 AUD

Highest Price

$1,747 AUD

Average Price

$682 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

26.9%

Price Spread

26.8%

30-Day Price Trend

-6.2%

30-Day Supply Change

-3.0%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,372/ct

10th Percentile

$1,110

Median

$1,372

90th Percentile

$1,852

Score Distribution

409 diamonds scored across 4 quality tiers

Excellent

34 (8.3%)

Very Good

110 (26.9%)

Good

72 (17.6%)

Average

193 (47.2%)

Find Your Diamond

Search 189 F SI2 heart diamonds and compare prices.

Search Diamonds

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