How much does a 0.20 to 0.49ct G VS2 natural marquise diamond cost?

As of October 2026, 0.20 to 0.49ct G VS2 natural marquise diamonds typically cost £233 GBP to £542 GBP, with a median price of £376 GBP. There are currently 719 diamonds matching this specification available across retailers.

Where can I find the best price on a G VS2 marquise diamond?

About 43% of these diamonds are available at multiple retailers, with an average price spread of 40%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct G VS2 Natural Marquise

Quick answer

As of October 2026, there are 719 natural marquise diamonds with G colour and VS2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £233 GBP to £542 GBP, with a median of £376 GBP. At least 18 retailers stock this exact specification, and 43% of the stones appear at more than one of them, with an average price spread of 40%. Half of all listings fall between £826 GBP and £1,297 GBP per carat. The same specification in lab grown form lists at a median of about £352 GBP per carat. Over the last 30 days the median price moved +1.3% and the number of listings moved +6.8%.

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: October 2026

Available

719

Lowest Price

£116 GBP

Highest Price

£1,307 GBP

Average Price

£395 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

43.0%

Price Spread

40.2%

30-Day Price Trend

+1.3%

30-Day Supply Change

+6.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,558/ct

10th Percentile

$914

Median

$1,558

90th Percentile

$1,959

Score Distribution

1.5K diamonds scored across 4 quality tiers

Excellent

185 (12.7%)

Very Good

429 (29.5%)

Good

348 (23.9%)

Average

494 (33.9%)

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Consider Instead

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

H VS2H colour is visually identical to G to the naked eye

Save 22%

Lab-Grown G VS2Same specifications, lab-grown origin

Save 83%

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