How much does a 1.00 to 1.49ct F I1 natural round diamond cost?

As of September 2026, 1.00 to 1.49ct F I1 natural round diamonds typically cost $1,751 AUD to $5,611 AUD, with a median price of $3,170 AUD. There are currently 1,436 diamonds matching this specification available across retailers.

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

About 61% of these diamonds are available at multiple retailers, with an average price spread of 54%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F I1 Natural Round

Quick answer

As of September 2026, there are 1,436 natural round diamonds with F colour and I1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $1,751 AUD to $5,611 AUD, with a median of $3,170 AUD. At least 28 retailers stock this exact specification, and 61% of the stones appear at more than one of them, with an average price spread of 54%. Half of all listings fall between $2,378 AUD and $4,041 AUD per carat. The same specification in lab grown form lists at a median of about $3,193 AUD per carat. Over the last 30 days the median price moved -3.3% and the number of listings moved +16.1%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Round natural stones in the index: 2,094 USD per carat, -3.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

1,436

Lowest Price

$913 AUD

Highest Price

$15,093 AUD

Average Price

$3,512 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

61.2%

Price Spread

53.9%

30-Day Price Trend

-3.3%

30-Day Supply Change

+16.1%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$2,198/ct

10th Percentile

$1,303

Median

$2,198

90th Percentile

$3,753

Score Distribution

1.4K diamonds scored across 4 quality tiers

Excellent

172 (12.0%)

Very Good

512 (35.7%)

Good

398 (27.7%)

Average

354 (24.7%)

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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