How much does a 1.50 to 1.99ct F SI2 lab grown princess diamond cost?

As of October 2026, 1.50 to 1.99ct F SI2 lab grown princess diamonds typically cost €169 EUR to €934 EUR, with a median price of €450 EUR. There are currently 6 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI2 princess diamond?

About 57% of these diamonds are available at multiple retailers, with an average price spread of 111%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct F SI2 Lab Grown Princess

Quick answer

As of October 2026, there are 6 lab grown princess diamonds with F colour and SI2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €169 EUR to €934 EUR, with a median of €450 EUR. At least 29 retailers stock this exact specification, and 57% of the stones appear at more than one of them, with an average price spread of 111%. Half of all listings fall between €190 EUR and €589 EUR per carat. The same specification in natural form lists at a median of about €3,136 EUR per carat. Over the last 30 days the median price moved +1.9% and the number of listings moved +11.8%.

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 lab grown stones in the index: 461 USD per carat, -4.8% 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: October 2026

Available

Lowest Price

€127 EUR

Highest Price

€1,482 EUR

Average Price

€521 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

57.5%

Price Spread

110.6%

30-Day Price Trend

+1.9%

30-Day Supply Change

+11.8%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$402/ct

10th Percentile

$139

Median

$402

90th Percentile

$917

Score Distribution

16 diamonds scored across 4 quality tiers

Excellent

4 (25.0%)

Very Good

3 (18.8%)

Good

5 (31.3%)

Average

4 (25.0%)

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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