How much does a 3.00 to 4.99ct H IF lab grown marquise diamond cost?

As of October 2026, 3.00 to 4.99ct H IF lab grown marquise diamonds typically cost $5,683 CAD to $7,864 CAD, with a median price of $7,613 CAD. There are currently 1 diamonds matching this specification available across retailers.

Where can I find the best price on a H IF marquise diamond?

About 50% of these diamonds are available at multiple retailers, with an average price spread of 98%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H IF Lab Grown Marquise

Quick answer

As of October 2026, there are 1 lab grown marquise diamonds with H color and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $5,683 CAD to $7,864 CAD, with a median of $7,613 CAD. At least 24 retailers stock this exact specification, and 50% of the stones appear at more than one of them, with an average price spread of 98%. Half of all listings fall between $1,584 CAD and $3,721 CAD per carat. The same specification in natural form lists at a median of about $22,250 CAD per carat.

Three of the best scored stones at this specification right now:

4.02ct Marquise H IF, IGI, grade A, from $5,201 CAD

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 lab grown stones in the index: 485 USD per carat, -3.2% 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

$5,201 CAD

Highest Price

$37,772 CAD

Average Price

$6,914 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

50.0%

Price Spread

97.8%

Price Range

Price per carat distribution across retailers

$1,564/ct

10th Percentile

$1,052

Median

$1,564

90th Percentile

$3,745

Score Distribution

3 diamonds scored across 2 quality tiers

Excellent

1 (33.3%)

Good

2 (66.7%)

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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