How much does a 1.00 to 1.49ct F SI1 natural marquise diamond cost?

As of September 2026, 1.00 to 1.49ct F SI1 natural marquise diamonds typically cost $4,107 CAD to $8,939 CAD, with a median price of $5,693 CAD. There are currently 783 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

1.00 to 1.49ct F SI1 Natural Marquise

Quick answer

As of September 2026, there are 783 natural marquise diamonds with F color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $4,107 CAD to $8,939 CAD, with a median of $5,693 CAD. At least 59 retailers stock this exact specification. Half of all listings fall between $4,672 CAD and $6,400 CAD per carat. The same specification in lab grown form lists at a median of about $551 CAD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Marquise natural stones in the index: 2,114 USD per carat, -8.8% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

783

Lowest Price

$1,596 CAD

Highest Price

$23,248 CAD

Average Price

$6,163 CAD

Market Intelligence

Retailers Selling

Price Spread

31.3%

Price Range

Price per carat distribution across retailers

$3,969/ct

10th Percentile

$2,853

Median

$3,969

90th Percentile

$5,411

Score Distribution

783 diamonds scored across 4 quality tiers

Excellent

24 (3.1%)

Very Good

133 (17.0%)

Good

294 (37.5%)

Average

332 (42.4%)

Find Your Diamond

Search 783 F SI1 marquise diamonds and compare prices.

Search Diamonds

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 27%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 88%

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