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 $3,929 SGD to $8,595 SGD, with a median price of $5,453 SGD. There are currently 787 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 787 natural marquise diamonds with F colour and SI1 clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $3,929 SGD to $8,595 SGD, with a median of $5,453 SGD. At least 60 retailers stock this exact specification. Half of all listings fall between $4,469 SGD and $6,132 SGD per carat. The same specification in lab grown form lists at a median of about $527 SGD 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

787

Lowest Price

$1,528 SGD

Highest Price

$22,268 SGD

Average Price

$5,897 SGD

Market Intelligence

Retailers Selling

Price Spread

31.6%

Price Range

Price per carat distribution across retailers

$3,949/ct

10th Percentile

$2,854

Median

$3,949

90th Percentile

$5,405

Score Distribution

787 diamonds scored across 4 quality tiers

Excellent

27 (3.4%)

Very Good

141 (17.9%)

Good

291 (37.0%)

Average

328 (41.7%)

Find Your Diamond

Search 787 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