How much does a 5.00ct+ G VS1 natural marquise diamond cost?

As of September 2026, 5.00ct+ G VS1 natural marquise diamonds typically cost £158,219 GBP to £224,997 GBP, with a median price of £178,596 GBP. There are currently 5 diamonds matching this specification available across retailers.

Where can I find the best price on a G VS1 marquise diamond?

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5.00ct+ G VS1 Natural Marquise

Quick answer

As of September 2026, there are 5 natural marquise diamonds with G colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £158,219 GBP to £224,997 GBP, with a median of £178,596 GBP. At least 12 retailers stock this exact specification. Half of all listings fall between £18,870 GBP and £24,169 GBP per carat. The same specification in lab grown form lists at a median of about £348 GBP 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

£152,457 GBP

Highest Price

£243,921 GBP

Average Price

£187,690 GBP

Market Intelligence

Retailers Selling

Price Spread

25.0%

Price Range

Price per carat distribution across retailers

$26,882/ct

10th Percentile

$23,125

Median

$26,882

90th Percentile

$35,831

Score Distribution

5 diamonds scored across 3 quality tiers

Very Good

2 (40.0%)

Good

2 (40.0%)

Average

1 (20.0%)

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Consider Instead

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

H VS1H colour is visually identical to G to the naked eye

Save 32%

Lab-Grown G VS1Same specifications, lab-grown origin

Save 98%

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