How much does a 3.00 to 4.99ct G IF natural marquise diamond cost?

As of November 2026, 3.00 to 4.99ct G IF natural marquise diamonds typically cost £43,321 GBP to £63,509 GBP, with a median price of £50,398 GBP. There are currently 1 diamonds matching this specification available across retailers.

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

About 31% of these diamonds are available at multiple retailers, with an average price spread of 23%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct G IF Natural Marquise

Quick answer

As of November 2026, there are 1 natural marquise diamonds with G colour and IF clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £43,321 GBP to £63,509 GBP, with a median of £50,398 GBP. At least 38 retailers stock this exact specification, and 31% of the stones appear at more than one of them, with an average price spread of 23%. Half of all listings fall between £14,942 GBP and £18,822 GBP per carat. The same specification in lab grown form lists at a median of about £867 GBP per carat. Over the last 30 days the median price moved +2.5% and the number of listings moved +31.6%.

Three of the best scored stones at this specification right now:

3.04ct Marquise G IF, GIA, grade A, from £43,202 GBP

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

£43,202 GBP

Highest Price

£79,875 GBP

Average Price

£52,265 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

30.8%

Price Spread

23.3%

30-Day Price Trend

+2.5%

30-Day Supply Change

+31.6%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$22,278/ct

10th Percentile

$18,182

Median

$22,278

90th Percentile

$28,946

Score Distribution

5 diamonds scored across 4 quality tiers

Excellent

1 (20.0%)

Very Good

1 (20.0%)

Good

1 (20.0%)

Average

2 (40.0%)

Find Your Diamond

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Consider Instead

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

H IFH colour is visually identical to G to the naked eye

Save 28%

Lab-Grown G IFSame specifications, lab-grown origin

Save 96%

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