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 $3,976 USD to $18,197 USD, with a median price of $4,729 USD. There are currently 18 diamonds matching this specification available across retailers.

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

About 23% 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 18 natural round diamonds with I color and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,976 USD to $18,197 USD, with a median of $4,729 USD. At least 20 retailers stock this exact specification, and 23% of the stones appear at more than one of them, with an average price spread of 30%. Half of all listings fall between $4,553 USD and $6,123 USD per carat. Over the last 30 days the median price moved +0.4% and the number of listings moved +3.7%.

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

$3,533 USD

Highest Price

$18,563 USD

Average Price

$8,158 USD

Market Intelligence

Retailers Selling

Cross Retailer %

23.1%

Price Spread

30.4%

30-Day Price Trend

+0.4%

30-Day Supply Change

+3.7%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$5,161/ct

10th Percentile

$4,137

Median

$5,161

90th Percentile

$8,209

Score Distribution

83 diamonds scored across 4 quality tiers

Excellent

11 (13.3%)

Very Good

12 (14.5%)

Good

19 (22.9%)

Average

41 (49.4%)

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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 36%

I IFIF inclusions are not visible without magnification

Save 18%

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