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

As of November 2026, 5.00ct+ G VS1 natural marquise diamonds typically cost £120,130 GBP to £189,790 GBP, with a median price of £159,750 GBP. There are currently 7 diamonds matching this specification available across retailers.

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

About 44% of these diamonds are available at multiple retailers, with an average price spread of 32%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G VS1 Natural Marquise

Quick answer

As of November 2026, there are 7 natural marquise diamonds with G colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £120,130 GBP to £189,790 GBP, with a median of £159,750 GBP. At least 24 retailers stock this exact specification, and 44% of the stones appear at more than one of them, with an average price spread of 32%. Half of all listings fall between £22,838 GBP and £32,213 GBP per carat. The same specification in lab grown form lists at a median of about £274 GBP per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved -1.4%.

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

£79,736 GBP

Highest Price

£289,782 GBP

Average Price

£156,792 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

44.4%

Price Spread

31.8%

30-Day Price Trend

-0.8%

30-Day Supply Change

-1.4%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$39,552/ct

10th Percentile

$24,383

Median

$39,552

90th Percentile

$45,924

Score Distribution

7 diamonds scored across 2 quality tiers

Very Good

3 (42.9%)

Good

4 (57.1%)

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Consider Instead

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

G VS2VS2 inclusions are not visible without magnification

Save 33%

Lab-Grown G VS1Same specifications, lab-grown origin

Save 99%

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