How much does a 1.50 to 1.99ct F I1 natural princess diamond cost?

As of October 2026, 1.50 to 1.99ct F I1 natural princess diamonds typically cost £2,688 GBP to £7,544 GBP, with a median price of £4,481 GBP. There are currently 30 diamonds matching this specification available across retailers.

Where can I find the best price on a F I1 princess diamond?

About 17% 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.

1.50 to 1.99ct F I1 Natural Princess

Quick answer

As of October 2026, there are 30 natural princess diamonds with F colour and I1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run £2,688 GBP to £7,544 GBP, with a median of £4,481 GBP. At least 24 retailers stock this exact specification, and 17% of the stones appear at more than one of them, with an average price spread of 60%. Half of all listings fall between £1,639 GBP and £3,093 GBP per carat. Over the last 30 days the median price moved -7.0% and the number of listings moved +4.2%.

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. Princess natural stones in the index: 2,158 USD per carat, +5.7% 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

£1,871 GBP

Highest Price

£13,557 GBP

Average Price

£5,058 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

16.9%

Price Spread

60.2%

30-Day Price Trend

-7.0%

30-Day Supply Change

+4.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$3,216/ct

10th Percentile

$1,825

Median

$3,216

90th Percentile

$5,147

Score Distribution

97 diamonds scored across 4 quality tiers

Excellent

1 (1.0%)

Very Good

15 (15.5%)

Good

21 (21.6%)

Average

60 (61.9%)

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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