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

As of September 2026, 1.00 to 1.49ct G SI2 natural heart diamonds typically cost $2,092 NZD to $6,475 NZD, with a median price of $3,205 NZD. There are currently 1,129 diamonds matching this specification available across retailers.

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1.00 to 1.49ct G SI2 Natural Heart

Quick answer

As of September 2026, there are 1,129 natural heart diamonds with G colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,092 NZD to $6,475 NZD, with a median of $3,205 NZD. At least 49 retailers stock this exact specification. Half of all listings fall between $2,600 NZD and $3,899 NZD per carat. The same specification in lab grown form lists at a median of about $3,581 NZD 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

1,129

Lowest Price

$656 NZD

Highest Price

$13,242 NZD

Average Price

$3,763 NZD

Market Intelligence

Retailers Selling

Price Spread

41.6%

Price Range

Price per carat distribution across retailers

$1,874/ct

10th Percentile

$1,336

Median

$1,874

90th Percentile

$3,097

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

191 (16.9%)

Very Good

340 (30.1%)

Good

332 (29.4%)

Average

266 (23.6%)

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H SI2H colour is visually identical to G 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