How much does a 0.75 to 0.99ct I SI2 lab grown princess diamond cost?

As of November 2026, 0.75 to 0.99ct I SI2 lab grown princess diamonds typically cost €671 EUR to €1,193 EUR, with a median price of €1,118 EUR. There are currently 1 diamonds matching this specification available across retailers.

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

About 13% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I SI2 Lab Grown Princess

Quick answer

As of November 2026, there are 1 lab grown princess diamonds with I color and SI2 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run €671 EUR to €1,193 EUR, with a median of €1,118 EUR. At least 12 retailers stock this exact specification, and 13% of the stones appear at more than one of them, with an average price spread of 46%. Half of all listings fall between €752 EUR and €1,314 EUR per carat. The same specification in natural form lists at a median of about €1,164 EUR per carat. Over the last 30 days the median price moved -0.5% and the number of listings moved -1.4%.

Three of the best scored stones at this specification right now:

0.95ct Princess I SI2, IGI, grade A, from €492 EUR

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

€492 EUR

Highest Price

€2,819 EUR

Average Price

€985 EUR

Market Intelligence

Retailers Selling

Cross Retailer %

12.5%

Price Spread

46.4%

30-Day Price Trend

-0.5%

30-Day Supply Change

-1.4%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,353/ct

10th Percentile

$762

Median

$1,353

90th Percentile

$2,185

Score Distribution

4 diamonds scored across 3 quality tiers

Excellent

1 (25.0%)

Good

1 (25.0%)

Average

2 (50.0%)

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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