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

As of November 2026, 1.00 to 1.49ct G SI2 natural heart diamonds typically cost $1,858 AUD to $5,956 AUD, with a median price of $2,763 AUD. There are currently 493 diamonds matching this specification available across retailers.

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

About 45% of these diamonds are available at multiple retailers, with an average price spread of 61%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G SI2 Natural Heart

Quick answer

As of November 2026, there are 493 natural heart diamonds with G colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,858 AUD to $5,956 AUD, with a median of $2,763 AUD. At least 56 retailers stock this exact specification, and 45% of the stones appear at more than one of them, with an average price spread of 61%. Half of all listings fall between $2,256 AUD and $3,965 AUD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +10.5%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Heart natural stones in the index: 2,289 USD per carat, -3.7% 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: November 2026

Available

493

Lowest Price

$1,174 AUD

Highest Price

$12,967 AUD

Average Price

$3,449 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

44.7%

Price Spread

61.2%

30-Day Price Trend

-1.5%

30-Day Supply Change

+10.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,962/ct

10th Percentile

$1,337

Median

$1,962

90th Percentile

$4,092

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

304 (26.7%)

Very Good

218 (19.2%)

Good

254 (22.3%)

Average

361 (31.8%)

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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