How much does a 0.20 to 0.49ct F VS1 natural marquise diamond cost?

As of October 2026, 0.20 to 0.49ct F VS1 natural marquise diamonds typically cost £198 GBP to £600 GBP, with a median price of £383 GBP. There are currently 998 diamonds matching this specification available across retailers.

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

About 42% of these diamonds are available at multiple retailers, with an average price spread of 47%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct F VS1 Natural Marquise

Quick answer

As of October 2026, there are 998 natural marquise diamonds with F colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £198 GBP to £600 GBP, with a median of £383 GBP. At least 21 retailers stock this exact specification, and 42% of the stones appear at more than one of them, with an average price spread of 47%. Half of all listings fall between £738 GBP and £1,267 GBP per carat. The same specification in lab grown form lists at a median of about £414 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

998

Lowest Price

£128 GBP

Highest Price

£1,292 GBP

Average Price

£400 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

42.0%

Price Spread

46.6%

30-Day Price Trend

+1.3%

30-Day Supply Change

+6.8%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,511/ct

10th Percentile

$870

Median

$1,511

90th Percentile

$1,838

Score Distribution

2.0K diamonds scored across 5 quality tiers

Exceptional

1 (0.1%)

Excellent

272 (13.9%)

Very Good

519 (26.6%)

Good

533 (27.3%)

Average

628 (32.2%)

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Consider Instead

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

Lab-Grown F VS1Same specifications, lab-grown origin

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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