How much does a 0.20 to 0.49ct F I1 natural round diamond cost?

As of October 2026, 0.20 to 0.49ct F I1 natural round diamonds typically cost $258 AUD to $1,170 AUD, with a median price of $608 AUD. There are currently 921 diamonds matching this specification available across retailers.

Where can I find the best price on a F I1 round diamond?

About 19% 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.

0.20 to 0.49ct F I1 Natural Round

Quick answer

As of October 2026, there are 921 natural round diamonds with F colour and I1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $258 AUD to $1,170 AUD, with a median of $608 AUD. At least 17 retailers stock this exact specification, and 19% of the stones appear at more than one of them, with an average price spread of 75%. Half of all listings fall between $1,124 AUD and $2,173 AUD per carat. The same specification in lab grown form lists at a median of about $750 AUD per carat. Over the last 30 days the median price moved +1.7% and the number of listings moved -12.9%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

921

Lowest Price

$104 AUD

Highest Price

$2,655 AUD

Average Price

$663 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

18.6%

Price Spread

74.7%

30-Day Price Trend

+1.7%

30-Day Supply Change

-12.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$986/ct

10th Percentile

$730

Median

$986

90th Percentile

$3,220

Score Distribution

1.6K diamonds scored across 4 quality tiers

Excellent

338 (20.5%)

Very Good

287 (17.4%)

Good

413 (25.0%)

Average

611 (37.1%)

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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