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

As of October 2026, 1.00 to 1.49ct H SI2 natural heart diamonds typically cost $1,583 SGD to $5,135 SGD, with a median price of $2,590 SGD. There are currently 487 diamonds matching this specification available across retailers.

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

About 43% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct H SI2 Natural Heart

Quick answer

As of October 2026, there are 487 natural heart diamonds with H colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,583 SGD to $5,135 SGD, with a median of $2,590 SGD. At least 57 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between $1,933 SGD and $3,369 SGD per carat. The same specification in lab grown form lists at a median of about $2,445 SGD per carat. Over the last 30 days the median price moved -1.5% and the number of listings moved +13.0%.

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

487

Lowest Price

$1,001 SGD

Highest Price

$11,006 SGD

Average Price

$3,054 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

42.9%

Price Spread

60.0%

30-Day Price Trend

-1.5%

30-Day Supply Change

+13.0%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,873/ct

10th Percentile

$1,238

Median

$1,873

90th Percentile

$3,801

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

261 (23.5%)

Very Good

188 (17.0%)

Good

274 (24.7%)

Average

386 (34.8%)

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Consider Instead

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

Lab-Grown H SI2Same specifications, lab-grown origin

Save 13%

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