How much does a 1.00 to 1.49ct I IF natural heart diamond cost?

As of September 2026, 1.00 to 1.49ct I IF natural heart diamonds typically cost $2,481 SGD to $5,209 SGD, with a median price of $3,361 SGD. There are currently 131 diamonds matching this specification available across retailers.

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1.00 to 1.49ct I IF Natural Heart

Quick answer

As of September 2026, there are 131 natural heart diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $2,481 SGD to $5,209 SGD, with a median of $3,361 SGD. At least 46 retailers stock this exact specification. Half of all listings fall between $3,256 SGD and $4,465 SGD per carat. The same specification in lab grown form lists at a median of about $4,106 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

131

Lowest Price

$1,866 SGD

Highest Price

$9,663 SGD

Average Price

$3,670 SGD

Market Intelligence

Retailers Selling

Price Spread

31.8%

Price Range

Price per carat distribution across retailers

$2,852/ct

10th Percentile

$2,126

Median

$2,852

90th Percentile

$3,931

Score Distribution

131 diamonds scored across 4 quality tiers

Excellent

47 (35.9%)

Very Good

42 (32.1%)

Good

26 (19.8%)

Average

16 (12.2%)

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J IFJ colour is visually identical to I 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