How much does a 1.00 to 1.49ct G FL lab grown princess diamond cost?

As of October 2026, 1.00 to 1.49ct G FL lab grown princess diamonds typically cost $439 USD to $478 USD, with a median price of $459 USD. There are currently 2 diamonds matching this specification available across retailers.

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

About 100% of these diamonds are available at multiple retailers, with an average price spread of 131%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G FL Lab Grown Princess

Quick answer

As of October 2026, there are 2 lab grown princess diamonds with G color and FL clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run $439 USD to $478 USD, with a median of $459 USD. At least 24 retailers stock this exact specification, and 100% of the stones appear at more than one of them, with an average price spread of 131%. Half of all listings fall between $501 USD and $1,390 USD per carat. Over the last 30 days the median price moved +1.3% and the number of listings moved +17.6%.

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

1.24ct Princess G FL, IGI, grade A, from $483 USD

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

$434 USD

Highest Price

$2,060 USD

Average Price

$459 USD

Market Intelligence

Retailers Selling

Cross Retailer %

100.0%

Price Spread

130.7%

30-Day Price Trend

+1.3%

30-Day Supply Change

+17.6%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$680/ct

10th Percentile

$400

Median

$680

90th Percentile

$1,605

Score Distribution

2 diamonds scored across 1 quality tiers

Excellent

2 (100.0%)

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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