How much does a 1.50 to 1.99ct I VS1 lab grown princess diamond cost?

As of October 2026, 1.50 to 1.99ct I VS1 lab grown princess diamonds typically cost $778 NZD to $3,612 NZD, with a median price of $2,671 NZD. There are currently 27 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS1 princess diamond?

About 20% of these diamonds are available at multiple retailers, with an average price spread of 86%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS1 Lab Grown Princess

Quick answer

As of October 2026, there are 27 lab grown princess diamonds with I colour and VS1 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $778 NZD to $3,612 NZD, with a median of $2,671 NZD. At least 41 retailers stock this exact specification, and 20% of the stones appear at more than one of them, with an average price spread of 86%. Half of all listings fall between $526 NZD and $1,249 NZD per carat. The same specification in natural form lists at a median of about $8,391 NZD per carat. Over the last 30 days the median price moved +8.3% and the number of listings moved +13.0%.

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

$539 NZD

Highest Price

$5,801 NZD

Average Price

$2,363 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

19.6%

Price Spread

86.1%

30-Day Price Trend

+8.3%

30-Day Supply Change

+13.0%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$472/ct

10th Percentile

$168

Median

$472

90th Percentile

$961

Score Distribution

44 diamonds scored across 4 quality tiers

Excellent

7 (15.9%)

Very Good

6 (13.6%)

Good

7 (15.9%)

Average

24 (54.5%)

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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