How much does a 2.00 to 2.99ct D SI2 lab grown cushion diamond cost?

As of October 2026, 2.00 to 2.99ct D SI2 lab grown cushion diamonds typically cost $756 AUD to $3,949 AUD, with a median price of $2,536 AUD. There are currently 19 diamonds matching this specification available across retailers.

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

About 18% of these diamonds are available at multiple retailers, with an average price spread of 160%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct D SI2 Lab Grown Cushion

Quick answer

As of October 2026, there are 19 lab grown cushion diamonds with D colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $756 AUD to $3,949 AUD, with a median of $2,536 AUD. At least 17 retailers stock this exact specification, and 18% of the stones appear at more than one of them, with an average price spread of 160%. Half of all listings fall between $468 AUD and $1,825 AUD per carat. The same specification in natural form lists at a median of about $10,500 AUD per carat. Over the last 30 days the median price moved +5.5% and the number of listings moved +9.0%.

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. Cushion lab grown stones in the index: 516 USD per carat, +6.9% 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

Lowest Price

$554 AUD

Highest Price

$5,016 AUD

Average Price

$2,546 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

18.3%

Price Spread

159.8%

30-Day Price Trend

+5.5%

30-Day Supply Change

+9.0%

Volatility (30d)

0.06

Price Range

Price per carat distribution across retailers

$597/ct

10th Percentile

$247

Median

$597

90th Percentile

$1,335

Score Distribution

31 diamonds scored across 4 quality tiers

Excellent

5 (16.1%)

Very Good

2 (6.5%)

Good

3 (9.7%)

Average

21 (67.7%)

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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