How much does a 0.50 to 0.74ct E SI2 natural heart diamond cost?

As of October 2026, 0.50 to 0.74ct E SI2 natural heart diamonds typically cost $597 AUD to $1,805 AUD, with a median price of $929 AUD. There are currently 167 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 52%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct E SI2 Natural Heart

Quick answer

As of October 2026, there are 167 natural heart diamonds with E colour and SI2 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $597 AUD to $1,805 AUD, with a median of $929 AUD. At least 50 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 52%. Half of all listings fall between $1,626 AUD and $2,631 AUD per carat. Over the last 30 days the median price moved -2.3% and the number of listings moved -9.5%.

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

167

Lowest Price

$502 AUD

Highest Price

$4,706 AUD

Average Price

$1,115 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

28.8%

Price Spread

51.6%

30-Day Price Trend

-2.3%

30-Day Supply Change

-9.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,367/ct

10th Percentile

$1,001

Median

$1,367

90th Percentile

$2,744

Score Distribution

449 diamonds scored across 4 quality tiers

Excellent

102 (22.7%)

Very Good

82 (18.3%)

Good

170 (37.9%)

Average

95 (21.2%)

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F SI2F colour is visually identical to E to the naked eye

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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