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

As of October 2026, 1.00 to 1.49ct J IF natural cushion diamonds typically cost £1,043 GBP to £2,851 GBP, with a median price of £1,458 GBP. There are currently 51 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 63%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct J IF Natural Cushion

Quick answer

As of October 2026, there are 51 natural cushion diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,043 GBP to £2,851 GBP, with a median of £1,458 GBP. At least 46 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 63%. Half of all listings fall between £1,132 GBP and £2,014 GBP per carat. Over the last 30 days the median price moved -3.1% and the number of listings moved +14.3%.

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. Cushion natural stones in the index: 2,948 USD per carat, +1.7% 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

£866 GBP

Highest Price

£6,139 GBP

Average Price

£1,703 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

38.3%

Price Spread

63.3%

30-Day Price Trend

-3.1%

30-Day Supply Change

+14.3%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,869/ct

10th Percentile

$1,265

Median

$1,869

90th Percentile

$3,414

Score Distribution

119 diamonds scored across 4 quality tiers

Excellent

18 (15.1%)

Very Good

36 (30.3%)

Good

41 (34.5%)

Average

24 (20.2%)

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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