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

As of November 2026, 2.00 to 2.99ct G SI2 lab grown cushion diamonds typically cost $610 AUD to $3,619 AUD, with a median price of $1,482 AUD. There are currently 9 diamonds matching this specification available across retailers.

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

About 34% of these diamonds are available at multiple retailers, with an average price spread of 75%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct G SI2 Lab Grown Cushion

Quick answer

As of November 2026, there are 9 lab grown cushion diamonds with G colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $610 AUD to $3,619 AUD, with a median of $1,482 AUD. At least 16 retailers stock this exact specification, and 34% of the stones appear at more than one of them, with an average price spread of 75%. Half of all listings fall between $421 AUD and $898 AUD per carat. The same specification in natural form lists at a median of about $9,448 AUD per carat. Over the last 30 days the median price moved +5.3% and the number of listings moved -2.9%.

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. 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: November 2026

Available

Lowest Price

$483 AUD

Highest Price

$5,460 AUD

Average Price

$1,803 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

34.1%

Price Spread

74.9%

30-Day Price Trend

+5.3%

30-Day Supply Change

-2.9%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$448/ct

10th Percentile

$220

Median

$448

90th Percentile

$1,089

Score Distribution

20 diamonds scored across 4 quality tiers

Excellent

2 (10.0%)

Very Good

3 (15.0%)

Good

7 (35.0%)

Average

8 (40.0%)

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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