How much does a 3.00 to 4.99ct H VS1 lab grown marquise diamond cost?

As of October 2026, 3.00 to 4.99ct H VS1 lab grown marquise diamonds typically cost £738 GBP to £3,579 GBP, with a median price of £1,282 GBP. There are currently 181 diamonds matching this specification available across retailers.

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

About 18% of these diamonds are available at multiple retailers, with an average price spread of 84%. A comparison tool like Carat Hunter lets you see all the prices side by side.

3.00 to 4.99ct H VS1 Lab Grown Marquise

Quick answer

As of October 2026, there are 181 lab grown marquise diamonds with H colour and VS1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run £738 GBP to £3,579 GBP, with a median of £1,282 GBP. At least 33 retailers stock this exact specification, and 18% of the stones appear at more than one of them, with an average price spread of 84%. Half of all listings fall between £260 GBP and £682 GBP per carat. The same specification in natural form lists at a median of about £11,000 GBP per carat. Over the last 30 days the median price moved +45.1% and the number of listings moved +13.6%.

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 lab grown stones in the index: 485 USD per carat, -3.2% 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

181

Lowest Price

£275 GBP

Highest Price

£5,572 GBP

Average Price

£1,815 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

17.9%

Price Spread

83.8%

30-Day Price Trend

+45.1%

30-Day Supply Change

+13.6%

Volatility (30d)

0.11

Price Range

Price per carat distribution across retailers

$675/ct

10th Percentile

$256

Median

$675

90th Percentile

$1,150

Score Distribution

655 diamonds scored across 4 quality tiers

Excellent

60 (9.2%)

Very Good

66 (10.1%)

Good

318 (48.5%)

Average

211 (32.2%)

Find Your Diamond

Search 181 H VS1 marquise diamonds and compare prices.

Search Diamonds

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