Radiant diamond prices.
The radiant cut combines the elegant shape of an emerald cut with the brilliance of a round. Its 70 facets deliver exceptional fire and sparkle. Our analytics are based on 82,239 radiant diamonds currently on the global market — 69,080 lab-grown and 13,159 natural. Radiant is the 6th most popular shape, representing 5.3% of all diamonds in our dataset.
Natural
£4,709
per carat
Lab-grown
£871
per carat
81.5%
Savings
The average lab-grown radiant diamond is priced at £871 per carat, while natural radiant diamonds average £4,709 per carat — a 81.5% difference. This means your 1ct natural radiant could trade for a 5.4ct lab-grown upgrade at equivalent value.
Radiant price matrix.
Price per carat in GBP, based on 69,080 radiant diamonds.
Among radiant diamonds, E/I1 offers the best value at £615/ct, while F/FL commands the highest premium at £2,976/ct.
Radiant distribution.
Colour and clarity breakdown for radiant diamonds.
Frequently asked.
What is the average price of a radiant diamond per carat in the UK?
Based on our dataset of 82,239 radiant diamonds, the average lab-grown radiant costs £871 per carat, while natural radiant diamonds average £4,709 per carat in GBP.
Are lab-grown radiant diamonds cheaper than natural?
Yes. Lab-grown radiant diamonds are 81.5% cheaper on average — £871/ct compared to £4,709/ct for natural. This means you could upgrade from a 1ct natural to a 5.4ct lab-grown for the same price.
How popular are radiant diamonds?
Radiant diamonds represent 5.3% of all diamonds in our dataset, making them the 6th most popular shape.
What is the best value colour-clarity combination for radiant diamonds?
E colour with I1 clarity offers the best value at £615 per carat for radiant diamonds.
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