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

As of October 2026, 3.00 to 4.99ct F SI1 natural cushion diamonds typically cost $39,631 CAD to $101,960 CAD, with a median price of $61,554 CAD. There are currently 113 diamonds matching this specification available across retailers.

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

About 40% 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.

3.00 to 4.99ct F SI1 Natural Cushion

Quick answer

As of October 2026, there are 113 natural cushion diamonds with F color and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $39,631 CAD to $101,960 CAD, with a median of $61,554 CAD. At least 53 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 30%. Half of all listings fall between $16,018 CAD and $21,660 CAD per carat. The same specification in lab grown form lists at a median of about $577 CAD per carat. Over the last 30 days the median price moved -0.6% and the number of listings moved +15.3%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

113

Lowest Price

$26,420 CAD

Highest Price

$182,883 CAD

Average Price

$67,551 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

40.4%

Price Spread

30.0%

30-Day Price Trend

-0.6%

30-Day Supply Change

+15.3%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$13,429/ct

10th Percentile

$9,585

Median

$13,429

90th Percentile

$18,206

Score Distribution

234 diamonds scored across 4 quality tiers

Excellent

39 (16.7%)

Very Good

68 (29.1%)

Good

47 (20.1%)

Average

80 (34.2%)

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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 21%

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