How much does a 5.00ct+ E IF natural marquise diamond cost?

As of September 2026, 5.00ct+ E IF natural marquise diamonds typically cost $276,196 AUD to $878,289 AUD, with a median price of $368,336 AUD. There are currently 14 diamonds matching this specification available across retailers.

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

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5.00ct+ E IF Natural Marquise

Quick answer

As of September 2026, there are 14 natural marquise diamonds with E colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $276,196 AUD to $878,289 AUD, with a median of $368,336 AUD. At least 16 retailers stock this exact specification. Half of all listings fall between $61,422 AUD and $71,480 AUD per carat. The same specification in lab grown form lists at a median of about $8,163 AUD 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

Lowest Price

$221,582 AUD

Highest Price

$1,325,238 AUD

Average Price

$518,292 AUD

Market Intelligence

Retailers Selling

Price Spread

15.0%

Price Range

Price per carat distribution across retailers

$47,942/ct

10th Percentile

$41,264

Median

$47,942

90th Percentile

$53,905

Score Distribution

14 diamonds scored across 5 quality tiers

Exceptional

1 (7.1%)

Excellent

4 (28.6%)

Very Good

3 (21.4%)

Good

5 (35.7%)

Average

1 (7.1%)

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Consider Instead

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

F IFF colour is visually identical to E to the naked eye

Save 24%

Lab-Grown E IFSame 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