How much does a 0.75 to 0.99ct F SI1 lab grown princess diamond cost?

As of November 2026, 0.75 to 0.99ct F SI1 lab grown princess diamonds typically cost €136 EUR to €582 EUR, with a median price of €419 EUR. There are currently 22 diamonds matching this specification available across retailers.

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

About 22% of these diamonds are available at multiple retailers, with an average price spread of 72%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct F SI1 Lab Grown Princess

Quick answer

As of November 2026, there are 22 lab grown princess diamonds with F color and SI1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €136 EUR to €582 EUR, with a median of €419 EUR. At least 32 retailers stock this exact specification, and 22% of the stones appear at more than one of them, with an average price spread of 72%. Half of all listings fall between €250 EUR and €519 EUR per carat. The same specification in natural form lists at a median of about €1,504 EUR per carat. Over the last 30 days the median price moved -0.8% and the number of listings moved -20.2%.

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 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

€101 EUR

Highest Price

€2,193 EUR

Average Price

€389 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

22.4%

Price Spread

71.7%

30-Day Price Trend

-0.8%

30-Day Supply Change

-20.2%

Volatility (30d)

0.01

Price Range

Price per carat distribution across retailers

$420/ct

10th Percentile

$183

Median

$420

90th Percentile

$933

Score Distribution

42 diamonds scored across 4 quality tiers

Excellent

6 (14.3%)

Very Good

7 (16.7%)

Good

18 (42.9%)

Average

11 (26.2%)

Find Your Diamond

Search 22 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