Marquise diamond prices.
The marquise cut features an elongated shape with pointed ends, maximising carat weight for the largest possible face-up appearance. Originally commissioned by King Louis XV. Our analytics are based on 57,456 marquise diamonds currently on the global market — 41,398 lab-grown and 16,058 natural. Marquise is the 8th most popular shape, representing 3.7% of all diamonds in our dataset.
Natural
£2,959
per carat
Lab-grown
£873
per carat
70.5%
Savings
The average lab-grown marquise diamond is priced at £873 per carat, while natural marquise diamonds average £2,959 per carat — a 70.5% difference. This means your 1ct natural marquise could trade for a 3.4ct lab-grown upgrade at equivalent value.
Marquise price matrix.
Price per carat in GBP, based on 41,398 marquise diamonds.
Among marquise diamonds, G/VVS2 offers the best value at £649/ct, while F/FL commands the highest premium at £3,114/ct.
Marquise distribution.
Colour and clarity breakdown for marquise diamonds.
Frequently asked.
What is the average price of a marquise diamond per carat in the UK?
Based on our dataset of 57,456 marquise diamonds, the average lab-grown marquise costs £873 per carat, while natural marquise diamonds average £2,959 per carat in GBP.
Are lab-grown marquise diamonds cheaper than natural?
Yes. Lab-grown marquise diamonds are 70.5% cheaper on average — £873/ct compared to £2,959/ct for natural. This means you could upgrade from a 1ct natural to a 3.4ct lab-grown for the same price.
How popular are marquise diamonds?
Marquise diamonds represent 3.7% of all diamonds in our dataset, making them the 8th most popular shape.
What is the best value colour-clarity combination for marquise diamonds?
G colour with VVS2 clarity offers the best value at £649 per carat for marquise diamonds.
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