How much does a 1.50 to 1.99ct F SI1 lab grown princess diamond cost?

As of November 2026, 1.50 to 1.99ct F SI1 lab grown princess diamonds typically cost €211 EUR to €1,027 EUR, with a median price of €598 EUR. There are currently 58 diamonds matching this specification available across retailers.

Where can I find the best price on a F SI1 princess diamond?

About 36% of these diamonds are available at multiple retailers, with an average price spread of 102%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct F SI1 Lab Grown Princess

Quick answer

As of November 2026, there are 58 lab grown princess diamonds with F color and SI1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run €211 EUR to €1,027 EUR, with a median of €598 EUR. At least 35 retailers stock this exact specification, and 36% of the stones appear at more than one of them, with an average price spread of 102%. Half of all listings fall between €200 EUR and €531 EUR per carat. The same specification in natural form lists at a median of about €4,518 EUR per carat. Over the last 30 days the median price moved -0.2% and the number of listings moved +7.4%.

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: November 2026

Available

Lowest Price

€168 EUR

Highest Price

€2,461 EUR

Average Price

€617 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

36.0%

Price Spread

102.4%

30-Day Price Trend

-0.2%

30-Day Supply Change

+7.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$361/ct

10th Percentile

$147

Median

$361

90th Percentile

$853

Score Distribution

143 diamonds scored across 4 quality tiers

Excellent

29 (20.3%)

Very Good

26 (18.2%)

Good

20 (14.0%)

Average

68 (47.6%)

Find Your Diamond

Search 58 F SI1 princess diamonds and compare prices.

Search Diamonds

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