How much does a 3.00 to 4.99ct F SI1 natural radiant diamond cost?

As of October 2026, 3.00 to 4.99ct F SI1 natural radiant diamonds typically cost $49,514 SGD to $112,639 SGD, with a median price of $71,873 SGD. There are currently 69 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 24%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct F SI1 Natural Radiant

Quick answer

As of October 2026, there are 69 natural radiant diamonds with F colour and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $49,514 SGD to $112,639 SGD, with a median of $71,873 SGD. At least 51 retailers stock this exact specification, and 29% of the stones appear at more than one of them, with an average price spread of 24%. Half of all listings fall between $15,996 SGD and $20,444 SGD per carat. The same specification in lab grown form lists at a median of about $483 SGD per carat. Over the last 30 days the median price moved -0.5% and the number of listings moved +10.5%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

$32,925 SGD

Highest Price

$189,337 SGD

Average Price

$79,655 SGD

Market Intelligence

Retailers Selling

Cross Retailer %

28.7%

Price Spread

24.4%

30-Day Price Trend

-0.5%

30-Day Supply Change

+10.5%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$14,232/ct

10th Percentile

$10,989

Median

$14,232

90th Percentile

$17,781

Score Distribution

211 diamonds scored across 4 quality tiers

Excellent

23 (10.9%)

Very Good

43 (20.4%)

Good

36 (17.1%)

Average

109 (51.7%)

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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 22%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 97%

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