How much does a 1.00 to 1.49ct H I1 natural heart diamond cost?

As of October 2026, 1.00 to 1.49ct H I1 natural heart diamonds typically cost $2,283 AUD to $5,573 AUD, with a median price of $3,629 AUD. There are currently 22 diamonds matching this specification available across retailers.

Where can I find the best price on a H I1 heart diamond?

About 9% of these diamonds are available at multiple retailers, with an average price spread of 36%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H I1 Natural Heart

Quick answer

As of October 2026, there are 22 natural heart diamonds with H colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,283 AUD to $5,573 AUD, with a median of $3,629 AUD. At least 21 retailers stock this exact specification, and 9% of the stones appear at more than one of them, with an average price spread of 36%. Half of all listings fall between $2,171 AUD and $3,163 AUD per carat. The same specification in lab grown form lists at a median of about $1,013 AUD per carat. Over the last 30 days the median price moved -0.1% and the number of listings moved +3.2%.

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

Lowest Price

$995 AUD

Highest Price

$7,547 AUD

Average Price

$3,937 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

9.3%

Price Spread

36.4%

30-Day Price Trend

-0.1%

30-Day Supply Change

+3.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,917/ct

10th Percentile

$1,061

Median

$1,917

90th Percentile

$2,701

Score Distribution

168 diamonds scored across 4 quality tiers

Excellent

7 (4.2%)

Very Good

9 (5.4%)

Good

10 (6.0%)

Average

142 (84.5%)

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Consider Instead

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

Lab-Grown H I1Same specifications, lab-grown origin

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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