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

As of November 2026, 1.00 to 1.49ct J IF natural marquise diamonds typically cost £1,543 GBP to £3,034 GBP, with a median price of £2,099 GBP. There are currently 33 diamonds matching this specification available across retailers.

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

About 38% 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.

1.00 to 1.49ct J IF Natural Marquise

Quick answer

As of November 2026, there are 33 natural marquise diamonds with J colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £1,543 GBP to £3,034 GBP, with a median of £2,099 GBP. At least 43 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 44%. Half of all listings fall between £1,834 GBP and £2,879 GBP per carat. Over the last 30 days the median price moved +3.1% and the number of listings moved +13.1%.

Three of the best scored stones at this specification right now:

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Marquise natural stones in the index: 2,177 USD per carat, -4.2% 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: November 2026

Available

Lowest Price

£1,065 GBP

Highest Price

£6,365 GBP

Average Price

£2,218 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

37.7%

Price Spread

44.1%

30-Day Price Trend

+3.1%

30-Day Supply Change

+13.1%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,178/ct

10th Percentile

$2,084

Median

$3,178

90th Percentile

$4,883

Score Distribution

78 diamonds scored across 4 quality tiers

Excellent

22 (28.2%)

Very Good

23 (29.5%)

Good

27 (34.6%)

Average

6 (7.7%)

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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