How much does a 0.75 to 0.99ct I VS1 lab grown princess diamond cost?

As of October 2026, 0.75 to 0.99ct I VS1 lab grown princess diamonds typically cost $185 AUD to $1,602 AUD, with a median price of $632 AUD. There are currently 9 diamonds matching this specification available across retailers.

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

About 27% of these diamonds are available at multiple retailers, with an average price spread of 109%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.75 to 0.99ct I VS1 Lab Grown Princess

Quick answer

As of October 2026, there are 9 lab grown princess diamonds with I colour and VS1 clarity in the 0.75 to 0.99ct range available across retailers worldwide. Prices typically run $185 AUD to $1,602 AUD, with a median of $632 AUD. At least 36 retailers stock this exact specification, and 27% of the stones appear at more than one of them, with an average price spread of 109%. Half of all listings fall between $424 AUD and $1,161 AUD per carat. The same specification in natural form lists at a median of about $2,600 AUD per carat. Over the last 30 days the median price moved +4.0% and the number of listings moved +1.8%.

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

$181 AUD

Highest Price

$3,900 AUD

Average Price

$729 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

27.0%

Price Spread

108.5%

30-Day Price Trend

+4.0%

30-Day Supply Change

+1.8%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$477/ct

10th Percentile

$188

Median

$477

90th Percentile

$1,156

Score Distribution

17 diamonds scored across 4 quality tiers

Excellent

4 (23.5%)

Very Good

1 (5.9%)

Good

5 (29.4%)

Average

7 (41.2%)

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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