How much does a 0.50 to 0.74ct F SI1 natural round diamond cost?

As of October 2026, 0.50 to 0.74ct F SI1 natural round diamonds typically cost $623 USD to $1,912 USD, with a median price of $1,055 USD. There are currently 11,690 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 round diamond?

About 40% of these diamonds are available at multiple retailers, with an average price spread of 50%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct F SI1 Natural Round

Quick answer

As of October 2026, there are 11,690 natural round diamonds with F color and SI1 clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run $623 USD to $1,912 USD, with a median of $1,055 USD. At least 68 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 50%. Half of all listings fall between $1,441 USD and $2,319 USD per carat. The same specification in lab grown form lists at a median of about $767 USD per carat. Over the last 30 days the median price moved -2.4% and the number of listings moved +12.0%.

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

11,690

Lowest Price

$361 USD

Highest Price

$3,642 USD

Average Price

$1,181 USD

Market Intelligence

Retailers Selling

Cross Retailer %

39.9%

Price Spread

49.9%

30-Day Price Trend

-2.4%

30-Day Supply Change

+12.0%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,761/ct

10th Percentile

$1,240

Median

$1,761

90th Percentile

$3,261

Score Distribution

19.4K diamonds scored across 4 quality tiers

Excellent

4,855 (25.0%)

Very Good

5,521 (28.4%)

Good

4,933 (25.4%)

Average

4,098 (21.1%)

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Consider Instead

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

F SI2SI2 inclusions are not visible without magnification

Save 14%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 56%

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