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

As of November 2026, 5.00ct+ E IF natural marquise diamonds typically cost $297,051 AUD to $805,242 AUD, with a median price of $342,387 AUD. There are currently 6 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 22%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ E IF Natural Marquise

Quick answer

As of November 2026, there are 6 natural marquise diamonds with E colour and IF clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $297,051 AUD to $805,242 AUD, with a median of $342,387 AUD. At least 21 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 22%. Half of all listings fall between $64,413 AUD and $79,346 AUD per carat. The same specification in lab grown form lists at a median of about $6,643 AUD per carat. Over the last 30 days the median price moved +2.5% and the number of listings moved +10.9%.

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: November 2026

Available

Lowest Price

$228,970 AUD

Highest Price

$1,027,540 AUD

Average Price

$479,765 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

38.5%

Price Spread

21.5%

30-Day Price Trend

+2.5%

30-Day Supply Change

+10.9%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$48,771/ct

10th Percentile

$44,475

Median

$48,771

90th Percentile

$59,861

Score Distribution

12 diamonds scored across 4 quality tiers

Excellent

7 (58.3%)

Very Good

2 (16.7%)

Good

2 (16.7%)

Average

1 (8.3%)

Find Your Diamond

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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 25%

Lab-Grown E IFSame specifications, lab-grown origin

Save 90%

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