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

As of October 2026, 1.00 to 1.49ct F SI1 natural marquise diamonds typically cost $4,048 CAD to $10,157 CAD, with a median price of $5,713 CAD. There are currently 286 diamonds matching this specification available across retailers.

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

About 35% of these diamonds are available at multiple retailers, with an average price spread of 39%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct F SI1 Natural Marquise

Quick answer

As of October 2026, there are 286 natural marquise diamonds with F color and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $4,048 CAD to $10,157 CAD, with a median of $5,713 CAD. At least 64 retailers stock this exact specification, and 35% of the stones appear at more than one of them, with an average price spread of 39%. Half of all listings fall between $4,638 CAD and $6,764 CAD per carat. The same specification in lab grown form lists at a median of about $566 CAD per carat. Over the last 30 days the median price moved -0.4% and the number of listings moved +16.2%.

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

286

Lowest Price

$2,759 CAD

Highest Price

$23,330 CAD

Average Price

$6,616 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

35.2%

Price Spread

39.1%

30-Day Price Trend

-0.4%

30-Day Supply Change

+16.2%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$3,890/ct

10th Percentile

$2,917

Median

$3,890

90th Percentile

$5,987

Score Distribution

635 diamonds scored across 4 quality tiers

Excellent

50 (7.9%)

Very Good

148 (23.3%)

Good

159 (25.0%)

Average

278 (43.8%)

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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 24%

Lab-Grown F SI1Same specifications, lab-grown origin

Save 89%

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