How much does a 2.00 to 2.99ct D SI2 natural round diamond cost?

As of October 2026, 2.00 to 2.99ct D SI2 natural round diamonds typically cost $15,168 AUD to $49,682 AUD, with a median price of $25,819 AUD. There are currently 439 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 43%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct D SI2 Natural Round

Quick answer

As of October 2026, there are 439 natural round diamonds with D colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $15,168 AUD to $49,682 AUD, with a median of $25,819 AUD. At least 59 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 43%. Half of all listings fall between $8,766 AUD and $13,500 AUD per carat. The same specification in lab grown form lists at a median of about $672 AUD per carat. Over the last 30 days the median price moved -0.3% and the number of listings moved +6.9%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

439

Lowest Price

$8,894 AUD

Highest Price

$86,066 AUD

Average Price

$29,761 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

34.6%

Price Spread

43.2%

30-Day Price Trend

-0.3%

30-Day Supply Change

+6.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$7,701/ct

10th Percentile

$4,866

Median

$7,701

90th Percentile

$11,377

Score Distribution

1.1K diamonds scored across 4 quality tiers

Excellent

292 (27.1%)

Very Good

215 (20.0%)

Good

214 (19.9%)

Average

356 (33.1%)

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Consider Instead

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D I1I1 inclusions are not visible without magnification

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Lab-Grown D SI2Same specifications, lab-grown origin

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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