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

As of October 2026, 0.20 to 0.49ct I IF natural round diamonds typically cost £212 GBP to £638 GBP, with a median price of £366 GBP. There are currently 3,096 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 60%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I IF Natural Round

Quick answer

As of October 2026, there are 3,096 natural round diamonds with I colour and IF clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run £212 GBP to £638 GBP, with a median of £366 GBP. At least 33 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between £963 GBP and £1,673 GBP per carat. The same specification in lab grown form lists at a median of about £754 GBP per carat. Over the last 30 days the median price moved -9.5% and the number of listings moved -1.3%.

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. Round natural stones in the index: 2,248 USD per carat, +7.6% 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

3,096

Lowest Price

£90 GBP

Highest Price

£1,661 GBP

Average Price

£397 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

35.7%

Price Spread

59.8%

30-Day Price Trend

-9.5%

30-Day Supply Change

-1.3%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$1,579/ct

10th Percentile

$1,090

Median

$1,579

90th Percentile

$2,703

Score Distribution

6.1K diamonds scored across 5 quality tiers

Exceptional

31 (0.5%)

Excellent

2,365 (38.6%)

Very Good

1,662 (27.1%)

Good

1,183 (19.3%)

Average

886 (14.5%)

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Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

J IFJ colour is visually identical to I 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