How much does a 0.75 to 0.99ct F SI2 lab grown round diamond cost?

As of October 2026, 0.75 to 0.99ct F SI2 lab grown round diamonds typically cost $714 AUD to $2,420 AUD, with a median price of $1,240 AUD. There are currently 8 diamonds matching this specification available across retailers.

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

About 33% of these diamonds are available at multiple retailers, with an average price spread of 155%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct F SI2 Lab Grown Round

Quick answer

As of October 2026, there are 8 lab grown round diamonds with F colour and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $714 AUD to $2,420 AUD, with a median of $1,240 AUD. At least 24 retailers stock this exact specification, and 33% of the stones appear at more than one of them, with an average price spread of 155%. Half of all listings fall between $555 AUD and $2,089 AUD per carat. The same specification in natural form lists at a median of about $2,805 AUD per carat. Over the last 30 days the median price moved -50.0% and the number of listings moved -30.8%.

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 lab grown stones in the index: 414 USD per carat, -5.0% 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

$448 AUD

Highest Price

$5,186 AUD

Average Price

$1,490 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

33.3%

Price Spread

155.4%

30-Day Price Trend

-50.0%

30-Day Supply Change

-30.8%

Volatility (30d)

0.10

Price Range

Price per carat distribution across retailers

$694/ct

10th Percentile

$160

Median

$694

90th Percentile

$2,118

Score Distribution

26 diamonds scored across 3 quality tiers

Very Good

8 (30.8%)

Good

6 (23.1%)

Average

12 (46.2%)

Find Your Diamond

Search 8 F SI2 round diamonds and compare prices.

Search Diamonds

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