How much does a 1.00 to 1.49ct J IF natural radiant diamond cost?

As of October 2026, 1.00 to 1.49ct J IF natural radiant diamonds typically cost £1,123 GBP to £2,813 GBP, with a median price of £1,584 GBP. There are currently 28 diamonds matching this specification available across retailers.

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

About 40% of these diamonds are available at multiple retailers, with an average price spread of 73%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J IF Natural Radiant

Quick answer

As of October 2026, there are 28 natural radiant diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,123 GBP to £2,813 GBP, with a median of £1,584 GBP. At least 45 retailers stock this exact specification, and 40% of the stones appear at more than one of them, with an average price spread of 73%. Half of all listings fall between £1,183 GBP and £2,285 GBP per carat. Over the last 30 days the median price moved -3.0% and the number of listings moved +10.5%.

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. 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

£760 GBP

Highest Price

£5,903 GBP

Average Price

£1,884 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

40.0%

Price Spread

72.7%

30-Day Price Trend

-3.0%

30-Day Supply Change

+10.5%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$2,018/ct

10th Percentile

$1,327

Median

$2,018

90th Percentile

$3,984

Score Distribution

77 diamonds scored across 4 quality tiers

Excellent

12 (15.6%)

Very Good

18 (23.4%)

Good

25 (32.5%)

Average

22 (28.6%)

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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