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

As of October 2026, 1.00 to 1.49ct G IF lab grown princess diamonds typically cost £166 GBP to £1,292 GBP, with a median price of £353 GBP. There are currently 8 diamonds matching this specification available across retailers.

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

About 44% of these diamonds are available at multiple retailers, with an average price spread of 121%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct G IF Lab Grown Princess

Quick answer

As of October 2026, there are 8 lab grown princess diamonds with G colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £166 GBP to £1,292 GBP, with a median of £353 GBP. At least 40 retailers stock this exact specification, and 44% of the stones appear at more than one of them, with an average price spread of 121%. Half of all listings fall between £273 GBP and £810 GBP per carat. The same specification in natural form lists at a median of about £3,413 GBP per carat. Over the last 30 days the median price moved +2.1% and the number of listings moved +16.4%.

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: October 2026

Available

Lowest Price

£136 GBP

Highest Price

£2,225 GBP

Average Price

£599 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

43.9%

Price Spread

120.9%

30-Day Price Trend

+2.1%

30-Day Supply Change

+16.4%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$595/ct

10th Percentile

$238

Median

$595

90th Percentile

$1,421

Score Distribution

19 diamonds scored across 4 quality tiers

Excellent

7 (36.8%)

Very Good

5 (26.3%)

Good

2 (10.5%)

Average

5 (26.3%)

Find Your Diamond

Search 8 G IF princess diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

G VVS1VVS1 inclusions are not visible without magnification

Save 15%

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