How much does a 0.50 to 0.74ct J IF natural marquise diamond cost?

As of November 2026, 0.50 to 0.74ct J IF natural marquise diamonds typically cost £412 GBP to £934 GBP, with a median price of £574 GBP. There are currently 57 diamonds matching this specification available across retailers.

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

About 36% of these diamonds are available at multiple retailers, with an average price spread of 51%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.50 to 0.74ct J IF Natural Marquise

Quick answer

As of November 2026, there are 57 natural marquise diamonds with J colour and IF clarity in the 0.50 to 0.74ct range available across retailers worldwide. Prices typically run £412 GBP to £934 GBP, with a median of £574 GBP. At least 46 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 51%. Half of all listings fall between £1,001 GBP and £1,642 GBP per carat. Over the last 30 days the median price moved +0.1% and the number of listings moved +13.2%.

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. Marquise natural stones in the index: 2,268 USD per carat, +10.8% 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

£289 GBP

Highest Price

£2,449 GBP

Average Price

£635 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

36.0%

Price Spread

51.4%

30-Day Price Trend

+0.1%

30-Day Supply Change

+13.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$1,670/ct

10th Percentile

$1,135

Median

$1,670

90th Percentile

$3,083

Score Distribution

148 diamonds scored across 4 quality tiers

Excellent

35 (23.6%)

Very Good

37 (25.0%)

Good

45 (30.4%)

Average

31 (20.9%)

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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