How much does a 0.20 to 0.49ct I VS1 lab grown radiant diamond cost?

As of October 2026, 0.20 to 0.49ct I VS1 lab grown radiant diamonds typically cost $139 AUD to $139 AUD, with a median price of $139 AUD. There are currently 1 diamonds matching this specification available across retailers.

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

About 71% of these diamonds are available at multiple retailers, with an average price spread of 90%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct I VS1 Lab Grown Radiant

Quick answer

As of October 2026, there are 1 lab grown radiant diamonds with I colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $139 AUD to $139 AUD, with a median of $139 AUD. At least 16 retailers stock this exact specification, and 71% of the stones appear at more than one of them, with an average price spread of 90%. Half of all listings fall between $496 AUD and $1,416 AUD per carat. The same specification in natural form lists at a median of about $1,856 AUD per carat. Over the last 30 days the median price moved -0.9% and the number of listings moved +20.2%.

Three of the best scored stones at this specification right now:

0.37ct Radiant I VS1, IGI, grade A, from $139 AUD

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. Radiant lab grown stones in the index: 474 USD per carat, -2.1% 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

$139 AUD

Highest Price

$1,275 AUD

Average Price

$139 AUD

Market Intelligence

Retailers Selling

Cross Retailer %

71.4%

Price Spread

90.2%

30-Day Price Trend

-0.9%

30-Day Supply Change

+20.2%

Volatility (30d)

0.02

Price Range

Price per carat distribution across retailers

$717/ct

10th Percentile

$296

Median

$717

90th Percentile

$1,681

Score Distribution

1 diamonds scored across 1 quality tiers

Excellent

1 (100.0%)

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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