How much does a 3.00 to 4.99ct F SI1 lab grown oval diamond cost?

As of October 2026, 3.00 to 4.99ct F SI1 lab grown oval diamonds typically cost $661 AUD to $5,013 AUD, with a median price of $2,334 AUD. There are currently 249 diamonds matching this specification available across retailers.

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

About 26% of these diamonds are available at multiple retailers, with an average price spread of 98%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct F SI1 Lab Grown Oval

Quick answer

As of October 2026, there are 249 lab grown oval diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $661 AUD to $5,013 AUD, with a median of $2,334 AUD. At least 38 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 98%. Half of all listings fall between $370 AUD and $985 AUD per carat. The same specification in natural form lists at a median of about $25,244 AUD per carat. Over the last 30 days the median price moved +16.2% and the number of listings moved +12.4%.

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. Oval lab grown stones in the index: 453 USD per carat, -7.4% 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

249

Lowest Price

$481 AUD

Highest Price

$9,878 AUD

Average Price

$2,763 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

26.2%

Price Spread

97.5%

30-Day Price Trend

+16.2%

30-Day Supply Change

+12.4%

Volatility (30d)

0.06

Price Range

Price per carat distribution across retailers

$443/ct

10th Percentile

$156

Median

$443

90th Percentile

$1,060

Score Distribution

767 diamonds scored across 4 quality tiers

Excellent

150 (19.6%)

Very Good

79 (10.3%)

Good

77 (10.0%)

Average

461 (60.1%)

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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