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 $1,680 SGD to $5,179 SGD, with a median price of $2,563 SGD. There are currently 1,112 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 1,112 natural heart diamonds with G colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,680 SGD to $5,179 SGD, with a median of $2,563 SGD. At least 49 retailers stock this exact specification. Half of all listings fall between $2,086 SGD and $3,124 SGD per carat. The same specification in lab grown form lists at a median of about $2,815 SGD 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

1,112

Lowest Price

$525 SGD

Highest Price

$10,593 SGD

Average Price

$3,010 SGD

Market Intelligence

Retailers Selling

Price Spread

41.6%

Price Range

Price per carat distribution across retailers

$1,872/ct

10th Percentile

$1,344

Median

$1,872

90th Percentile

$3,147

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

188 (16.9%)

Very Good

330 (29.7%)

Good

334 (30.0%)

Average

260 (23.4%)

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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