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

As of October 2026, 1.00 to 1.49ct D IF lab grown princess diamonds typically cost £216 GBP to £1,399 GBP, with a median price of £466 GBP. There are currently 431 diamonds matching this specification available across retailers.

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

About 38% of these diamonds are available at multiple retailers, with an average price spread of 117%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.00 to 1.49ct D IF Lab Grown Princess

Quick answer

As of October 2026, there are 431 lab grown princess diamonds with D colour and IF clarity in the 1.00 to 1.49ct range available across retailers worldwide. Prices typically run £216 GBP to £1,399 GBP, with a median of £466 GBP. At least 50 retailers stock this exact specification, and 38% of the stones appear at more than one of them, with an average price spread of 117%. Half of all listings fall between £307 GBP and £879 GBP per carat. The same specification in natural form lists at a median of about £6,262 GBP per carat. Over the last 30 days the median price moved -4.8% and the number of listings moved +10.5%.

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

431

Lowest Price

£172 GBP

Highest Price

£5,254 GBP

Average Price

£660 GBP

Market Intelligence

Retailers Selling

Cross Retailer %

37.9%

Price Spread

117.4%

30-Day Price Trend

-4.8%

30-Day Supply Change

+10.5%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$653/ct

10th Percentile

$292

Median

$653

90th Percentile

$1,469

Score Distribution

1.1K diamonds scored across 5 quality tiers

Exceptional

10 (0.9%)

Excellent

402 (36.3%)

Very Good

196 (17.7%)

Good

305 (27.6%)

Average

194 (17.5%)

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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