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

As of November 6, 2026, 1.00 to 1.49ct K SI2 natural heart diamonds typically cost HK$8,218 HKD to HK$24,130 HKD, with a median price of HK$13,979 HKD. There are currently 213 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 78%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct K SI2 Natural Heart

Quick answer

As of November 6, 2026, there are 213 natural heart diamonds with K colour and SI2 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run HK$8,218 HKD to HK$24,130 HKD, with a median of HK$13,979 HKD. Half of all listings fall between HK$9,040 HKD and HK$19,049 HKD per carat. The same specification in lab grown form lists at a median of about HK$24,102 HKD per carat. Over the last 30 days the median price moved -1.7% and the number of listings moved +11.0%.

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 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

213

Lowest Price

HK$6,544 HKD

Highest Price

HK$44,208 HKD

Average Price

HK$15,642 HKD

Market Intelligence

Cross Retailer %

34.3%

Price Spread

78.0%

30-Day Price Trend

-1.7%

30-Day Supply Change

+11.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,637/ct

10th Percentile

$1,028

Median

$1,637

90th Percentile

$2,894

Score Distribution

213 diamonds scored across 4 quality tiers

Excellent

34 (16.0%)

Very Good

46 (21.6%)

Good

39 (18.3%)

Average

94 (44.1%)

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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