How much does a 0.20 to 0.49ct I IF natural radiant diamond cost?

As of October 2026, 0.20 to 0.49ct I IF natural radiant diamonds typically cost £246 GBP to £449 GBP, with a median price of £359 GBP. There are currently 7 diamonds matching this specification available across retailers.

Where can I find the best price on a I IF radiant diamond?

About 28% of these diamonds are available at multiple retailers, with an average price spread of 44%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I IF Natural Radiant

Quick answer

As of October 2026, there are 7 natural radiant diamonds with I colour and IF clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £246 GBP to £449 GBP, with a median of £359 GBP. At least 35 retailers stock this exact specification, and 28% of the stones appear at more than one of them, with an average price spread of 44%. Half of all listings fall between £944 GBP and £1,426 GBP per carat. Over the last 30 days the median price moved -8.3% and the number of listings moved +6.3%.

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. Radiant natural stones in the index: 3,091 USD per carat, +13.2% 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

Lowest Price

£212 GBP

Highest Price

£1,266 GBP

Average Price

£358 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

28.5%

Price Spread

44.0%

30-Day Price Trend

-8.3%

30-Day Supply Change

+6.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,460/ct

10th Percentile

$1,075

Median

$1,460

90th Percentile

$2,804

Score Distribution

25 diamonds scored across 4 quality tiers

Excellent

6 (24.0%)

Very Good

4 (16.0%)

Good

11 (44.0%)

Average

4 (16.0%)

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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