How much does a 1.50 to 1.99ct I VS2 lab grown round diamond cost?

As of October 2026, 1.50 to 1.99ct I VS2 lab grown round diamonds typically cost $549 AUD to $4,208 AUD, with a median price of $2,178 AUD. There are currently 359 diamonds matching this specification available across retailers.

Where can I find the best price on a I VS2 round diamond?

About 25% of these diamonds are available at multiple retailers, with an average price spread of 87%. A comparison tool like Carat Hunter lets you see all the prices side by side.

1.50 to 1.99ct I VS2 Lab Grown Round

Quick answer

As of October 2026, there are 359 lab grown round diamonds with I colour and VS2 clarity in the 1.50 to 1.99ct range available across retailers worldwide. Prices typically run $549 AUD to $4,208 AUD, with a median of $2,178 AUD. At least 38 retailers stock this exact specification, and 25% of the stones appear at more than one of them, with an average price spread of 87%. Half of all listings fall between $609 AUD and $1,687 AUD per carat. The same specification in natural form lists at a median of about $7,497 AUD per carat. Over the last 30 days the median price moved -6.3% and the number of listings moved +0.8%.

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. Round lab grown stones in the index: 414 USD per carat, -5.0% 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

359

Lowest Price

$239 AUD

Highest Price

$9,104 AUD

Average Price

$2,176 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

24.7%

Price Spread

86.6%

30-Day Price Trend

-6.3%

30-Day Supply Change

+0.8%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$874/ct

10th Percentile

$272

Median

$874

90th Percentile

$1,941

Score Distribution

913 diamonds scored across 4 quality tiers

Excellent

112 (12.3%)

Very Good

213 (23.3%)

Good

187 (20.5%)

Average

401 (43.9%)

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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