How much does a 0.20 to 0.49ct K VS1 lab grown round diamond cost?

As of November 6, 2026, 0.20 to 0.49ct K VS1 lab grown round diamonds typically cost $231 AUD to $695 AUD, with a median price of $411 AUD. There are currently 31 diamonds matching this specification available across retailers.

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

About 29% of these diamonds are available at multiple retailers, with an average price spread of 46%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct K VS1 Lab Grown Round

Quick answer

As of November 6, 2026, there are 31 lab grown round diamonds with K colour and VS1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $231 AUD to $695 AUD, with a median of $411 AUD. Half of all listings fall between $733 AUD and $1,208 AUD per carat. The same specification in natural form lists at a median of about $1,429 AUD per carat. Over the last 30 days the median price moved -14.6% and the number of listings moved -12.9%.

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

Caratlytics Diamond Price Index, October 2026: natural diamonds at 2,202 USD per carat and lab-grown at 462 USD per carat, a natural to lab ratio of 4.8 to 1. Round lab grown stones in the index: 425 USD per carat, +1.7% month on month. See the full index release

Figures come from current listings across more than 125 retailers. The index is a monthly release.

Last updated: November 6, 2026

Available

Lowest Price

$161 AUD

Highest Price

$1,264 AUD

Average Price

$431 AUD

Market Intelligence

Cross Retailer %

29.0%

Price Spread

45.7%

30-Day Price Trend

-14.6%

30-Day Supply Change

-12.9%

Volatility (30d)

0.04

Price Range

Price per carat distribution across retailers

$727/ct

10th Percentile

$436

Median

$727

90th Percentile

$1,430

Score Distribution

31 diamonds scored across 4 quality tiers

Excellent

2 (6.5%)

Very Good

4 (12.9%)

Good

18 (58.1%)

Average

7 (22.6%)

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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