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

As of October 2026, 0.20 to 0.49ct D VS1 lab grown radiant diamonds typically cost $166 NZD to $786 NZD, with a median price of $414 NZD. There are currently 320 diamonds matching this specification available across retailers.

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

About 44% of these diamonds are available at multiple retailers, with an average price spread of 113%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D VS1 Lab Grown Radiant

Quick answer

As of October 2026, there are 320 lab grown radiant diamonds with D colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $166 NZD to $786 NZD, with a median of $414 NZD. At least 17 retailers stock this exact specification, and 44% of the stones appear at more than one of them, with an average price spread of 113%. Half of all listings fall between $581 NZD and $1,521 NZD per carat. The same specification in natural form lists at a median of about $2,969 NZD per carat. Over the last 30 days the median price moved -21.0% and the number of listings moved +59.4%.

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. 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

320

Lowest Price

$96 NZD

Highest Price

$1,974 NZD

Average Price

$447 NZD

Market Intelligence

Retailers Selling

Cross Retailer %

43.8%

Price Spread

113.5%

30-Day Price Trend

-21.0%

30-Day Supply Change

+59.4%

Volatility (30d)

0.07

Price Range

Price per carat distribution across retailers

$466/ct

10th Percentile

$270

Median

$466

90th Percentile

$1,132

Score Distribution

733 diamonds scored across 4 quality tiers

Excellent

229 (31.2%)

Very Good

91 (12.4%)

Good

256 (34.9%)

Average

157 (21.4%)

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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