How much does a 1.00 to 1.49ct E SI2 natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct E SI2 natural heart diamonds typically cost $1,956 AUD to $7,069 AUD, with a median price of $2,922 AUD. There are currently 649 diamonds matching this specification available across retailers.

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

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1.00 to 1.49ct E SI2 Natural Heart

Quick answer

As of September 2026, there are 649 natural heart diamonds with E colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,956 AUD to $7,069 AUD, with a median of $2,922 AUD. At least 46 retailers stock this exact specification. Half of all listings fall between $2,496 AUD and $3,661 AUD per carat. The same specification in lab grown form lists at a median of about $703 AUD per carat.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Heart natural stones in the index: 2,261 USD per carat, +1.7% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

649

Lowest Price

$554 AUD

Highest Price

$26,374 AUD

Average Price

$3,917 AUD

Market Intelligence

Retailers Selling

Price Spread

39.8%

Price Range

Price per carat distribution across retailers

$2,088/ct

10th Percentile

$1,537

Median

$2,088

90th Percentile

$3,578

Score Distribution

649 diamonds scored across 4 quality tiers

Excellent

109 (16.8%)

Very Good

196 (30.2%)

Good

136 (21.0%)

Average

208 (32.0%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

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

Save 10%

Lab-Grown E SI2Same specifications, lab-grown origin

Save 76%

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