How much does a 2.00 to 2.99ct K SI1 natural heart diamond cost?

As of November 6, 2026, 2.00 to 2.99ct K SI1 natural heart diamonds typically cost $6,225 AUD to $16,259 AUD, with a median price of $9,962 AUD. There are currently 85 diamonds matching this specification available across retailers.

Where can I find the best price on a K SI1 heart diamond?

About 51% of these diamonds are available at multiple retailers, with an average price spread of 40%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct K SI1 Natural Heart

Quick answer

As of November 6, 2026, there are 85 natural heart diamonds with K colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $6,225 AUD to $16,259 AUD, with a median of $9,962 AUD. Half of all listings fall between $3,770 AUD and $5,705 AUD per carat. Over the last 30 days the median price moved -1.3% and the number of listings moved +13.9%.

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

Lowest Price

$4,808 AUD

Highest Price

$23,863 AUD

Average Price

$10,401 AUD

Market Intelligence

Cross Retailer %

50.6%

Price Spread

40.2%

30-Day Price Trend

-1.3%

30-Day Supply Change

+13.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,310/ct

10th Percentile

$2,128

Median

$3,310

90th Percentile

$5,482

Score Distribution

85 diamonds scored across 4 quality tiers

Excellent

23 (27.1%)

Very Good

25 (29.4%)

Good

11 (12.9%)

Average

26 (30.6%)

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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