How much does a 2.00 to 2.99ct I SI2 natural heart diamond cost?

As of October 2026, 2.00 to 2.99ct I SI2 natural heart diamonds typically cost $8,185 AUD to $31,812 AUD, with a median price of $14,770 AUD. There are currently 194 diamonds matching this specification available across retailers.

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

About 43% of these diamonds are available at multiple retailers, with an average price spread of 48%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct I SI2 Natural Heart

Quick answer

As of October 2026, there are 194 natural heart diamonds with I colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $8,185 AUD to $31,812 AUD, with a median of $14,770 AUD. At least 51 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 48%. Half of all listings fall between $4,968 AUD and $7,882 AUD per carat. The same specification in lab grown form lists at a median of about $1,892 AUD per carat. Over the last 30 days the median price moved -1.0% and the number of listings moved +11.8%.

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

194

Lowest Price

$3,684 AUD

Highest Price

$67,137 AUD

Average Price

$17,706 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

43.4%

Price Spread

47.7%

30-Day Price Trend

-1.0%

30-Day Supply Change

+11.8%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$4,291/ct

10th Percentile

$2,816

Median

$4,291

90th Percentile

$7,144

Score Distribution

559 diamonds scored across 4 quality tiers

Excellent

137 (24.5%)

Very Good

93 (16.6%)

Good

68 (12.2%)

Average

261 (46.7%)

Find Your Diamond

Search 194 I SI2 heart diamonds and compare prices.

Search Diamonds

Consider Instead

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

J SI2J colour is visually identical to I to the naked eye

Save 20%

Lab-Grown I SI2Same specifications, lab-grown origin

Save 69%

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