How much does a 1.00 to 1.49ct I IF natural marquise diamond cost?

As of September 2026, 1.00 to 1.49ct I IF natural marquise diamonds typically cost €2,575 EUR to €5,586 EUR, with a median price of €3,572 EUR. There are currently 157 diamonds matching this specification available across retailers.

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

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

1.00 to 1.49ct I IF Natural Marquise

Quick answer

As of September 2026, there are 157 natural marquise diamonds with I colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run €2,575 EUR to €5,586 EUR, with a median of €3,572 EUR. At least 51 retailers stock this exact specification. Half of all listings fall between €3,290 EUR and €4,575 EUR per carat. The same specification in lab grown form lists at a median of about €3,506 EUR 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

157

Lowest Price

€2,276 EUR

Highest Price

€9,171 EUR

Average Price

€3,920 EUR

Market Intelligence

Retailers Selling

Price Spread

33.6%

Price Range

Price per carat distribution across retailers

$4,380/ct

10th Percentile

$3,178

Median

$4,380

90th Percentile

$6,168

Score Distribution

157 diamonds scored across 4 quality tiers

Excellent

41 (26.1%)

Very Good

54 (34.4%)

Good

35 (22.3%)

Average

27 (17.2%)

Find Your Diamond

Search 157 I IF marquise diamonds and compare prices.

Search Diamonds

Consider Instead

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

J IFJ colour is visually identical to I to the naked eye

Save 31%

Lab-Grown I IFSame specifications, lab-grown origin

Save 22%

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