How much does a 2.00 to 2.99ct F SI1 lab grown marquise diamond cost?

As of October 2026, 2.00 to 2.99ct F SI1 lab grown marquise diamonds typically cost $409 AUD to $3,320 AUD, with a median price of $1,572 AUD. There are currently 52 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 marquise diamond?

About 23% of these diamonds are available at multiple retailers, with an average price spread of 109%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct F SI1 Lab Grown Marquise

Quick answer

As of October 2026, there are 52 lab grown marquise diamonds with F colour and SI1 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $409 AUD to $3,320 AUD, with a median of $1,572 AUD. At least 29 retailers stock this exact specification, and 23% of the stones appear at more than one of them, with an average price spread of 109%. Half of all listings fall between $427 AUD and $1,339 AUD per carat. The same specification in natural form lists at a median of about $18,255 AUD per carat. Over the last 30 days the median price moved +4.5% and the number of listings moved +47.0%.

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. Marquise lab grown stones in the index: 485 USD per carat, -3.2% 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

$347 AUD

Highest Price

$6,316 AUD

Average Price

$1,751 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

23.4%

Price Spread

108.8%

30-Day Price Trend

+4.5%

30-Day Supply Change

+47.0%

Volatility (30d)

0.05

Price Range

Price per carat distribution across retailers

$589/ct

10th Percentile

$180

Median

$589

90th Percentile

$1,245

Score Distribution

140 diamonds scored across 4 quality tiers

Excellent

30 (21.4%)

Very Good

14 (10.0%)

Good

46 (32.9%)

Average

50 (35.7%)

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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