How much does a 1.50 to 1.99ct G VS1 natural marquise diamond cost?

As of November 2026, 1.50 to 1.99ct G VS1 natural marquise diamonds typically cost £8,485 GBP to £16,134 GBP, with a median price of £11,340 GBP. There are currently 40 diamonds matching this specification available across retailers.

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

About 26% of these diamonds are available at multiple retailers, with an average price spread of 24%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct G VS1 Natural Marquise

Quick answer

As of November 2026, there are 40 natural marquise diamonds with G colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £8,485 GBP to £16,134 GBP, with a median of £11,340 GBP. At least 62 retailers stock this exact specification, and 26% of the stones appear at more than one of them, with an average price spread of 24%. Half of all listings fall between £6,940 GBP and £8,812 GBP per carat. The same specification in lab grown form lists at a median of about £431 GBP per carat. Over the last 30 days the median price moved -1.6% and the number of listings moved +22.5%.

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

£6,282 GBP

Highest Price

£25,714 GBP

Average Price

£12,124 GBP