How much does a 1.00 to 1.49ct I FL natural round diamond cost?

As of October 2026, 1.00 to 1.49ct I FL natural round diamonds typically cost $5,663 AUD to $25,885 AUD, with a median price of $6,956 AUD. There are currently 17 diamonds matching this specification available across retailers.

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

About 22% of these diamonds are available at multiple retailers, with an average price spread of 30%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct I FL Natural Round

Quick answer

As of October 2026, there are 17 natural round diamonds with I colour and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $5,663 AUD to $25,885 AUD, with a median of $6,956 AUD. At least 19 retailers stock this exact specification, and 22% of the stones appear at more than one of them, with an average price spread of 30%. Half of all listings fall between $6,485 AUD and $8,690 AUD per carat. Over the last 30 days the median price moved +0.2% and the number of listings moved +3.3%.

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

Lowest Price

$5,030 AUD

Highest Price

$26,426 AUD

Average Price

$11,641 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

22.2%

Price Spread

29.9%

30-Day Price Trend

+0.2%

30-Day Supply Change

+3.3%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$5,187/ct

10th Percentile

$4,141

Median

$5,187

90th Percentile

$8,220

Score Distribution

61 diamonds scored across 4 quality tiers

Excellent

10 (16.4%)

Very Good

12 (19.7%)

Good

21 (34.4%)

Average

18 (29.5%)

Find Your Diamond

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J FLJ colour is visually identical to I to the naked eye

Save 35%

I IFIF inclusions are not visible without magnification

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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