How much does a 3.00 to 4.99ct E SI2 natural marquise diamond cost?

As of October 2026, 3.00 to 4.99ct E SI2 natural marquise diamonds typically cost $38,904 CAD to $88,564 CAD, with a median price of $57,629 CAD. There are currently 34 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 marquise diamond?

About 37% of these diamonds are available at multiple retailers, with an average price spread of 33%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct E SI2 Natural Marquise

Quick answer

As of October 2026, there are 34 natural marquise diamonds with E color and SI2 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $38,904 CAD to $88,564 CAD, with a median of $57,629 CAD. At least 43 retailers stock this exact specification, and 37% of the stones appear at more than one of them, with an average price spread of 33%. Half of all listings fall between $16,074 CAD and $22,325 CAD per carat. The same specification in lab grown form lists at a median of about $455 CAD per carat. Over the last 30 days the median price moved +0.3% and the number of listings moved +4.9%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

$29,988 CAD

Highest Price

$163,412 CAD

Average Price

$62,676 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

37.2%

Price Spread

32.8%

30-Day Price Trend

+0.3%

30-Day Supply Change

+4.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$13,602/ct

10th Percentile

$8,803

Median

$13,602

90th Percentile

$18,028

Score Distribution

72 diamonds scored across 4 quality tiers

Excellent

21 (29.2%)

Very Good

27 (37.5%)

Good

7 (9.7%)

Average

17 (23.6%)

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Consider Instead

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

Lab-Grown E SI2Same specifications, lab-grown origin

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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