How much does a 5.00ct+ G VS1 lab grown oval diamond cost?

As of October 2026, 5.00ct+ G VS1 lab grown oval diamonds typically cost £529 GBP to £5,867 GBP, with a median price of £1,166 GBP. There are currently 1,320 diamonds matching this specification available across retailers.

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

About 55% of these diamonds are available at multiple retailers, with an average price spread of 101%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ G VS1 Lab Grown Oval

Quick answer

As of October 2026, there are 1,320 lab grown oval diamonds with G colour and VS1 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run £529 GBP to £5,867 GBP, with a median of £1,166 GBP. At least 46 retailers stock this exact specification, and 55% of the stones appear at more than one of them, with an average price spread of 101%. Half of all listings fall between £187 GBP and £461 GBP per carat. The same specification in natural form lists at a median of about £26,159 GBP per carat. Over the last 30 days the median price moved -6.2% and the number of listings moved +22.6%.

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. Oval lab grown stones in the index: 453 USD per carat, -7.4% 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

1,320

Lowest Price

£103 GBP

Highest Price

£55,225 GBP

Average Price

£2,544 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

55.2%

Price Spread

101.2%

30-Day Price Trend

-6.2%

30-Day Supply Change

+22.6%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$362/ct

10th Percentile

$179

Median

$362

90th Percentile

$961

Score Distribution

2.4K diamonds scored across 4 quality tiers

Excellent

1,026 (41.9%)

Very Good

386 (15.8%)

Good

360 (14.7%)

Average

674 (27.6%)

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

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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