How much does a 2.00 to 2.99ct K SI2 lab grown round diamond cost?

As of November 6, 2026, 2.00 to 2.99ct K SI2 lab grown round diamonds typically cost $4,617 AUD to $6,604 AUD, with a median price of $5,668 AUD. There are currently 153 diamonds matching this specification available across retailers.

Where can I find the best price on a K SI2 round diamond?

About 53% of these diamonds are available at multiple retailers, with an average price spread of 12%. A comparison tool like Carat Hunter lets you see all the prices side by side.

2.00 to 2.99ct K SI2 Lab Grown Round

Quick answer

As of November 6, 2026, there are 153 lab grown round diamonds with K colour and SI2 clarity in the 2.00 to 2.99ct range available across retailers worldwide. Prices typically run $4,617 AUD to $6,604 AUD, with a median of $5,668 AUD. Half of all listings fall between $2,267 AUD and $2,550 AUD per carat. The same specification in natural form lists at a median of about $5,569 AUD per carat. Over the last 30 days the median price moved -0.1% and the number of listings moved +1.9%.

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

153

Lowest Price

$320 AUD

Highest Price

$13,940 AUD

Average Price

$5,583 AUD

Market Intelligence

Cross Retailer %

52.9%

Price Spread

12.3%

30-Day Price Trend

-0.1%

30-Day Supply Change

+1.9%

Volatility (30d)

0.00

Price Range

Price per carat distribution across retailers

$1,608/ct

10th Percentile

$1,580

Median

$1,608

90th Percentile

$1,807

Score Distribution

153 diamonds scored across 4 quality tiers

Excellent

3 (2.0%)

Very Good

38 (24.8%)

Good

41 (26.8%)

Average

71 (46.4%)

Find Your Diamond

Search 153 K SI2 round diamonds and compare prices.

Search Diamonds

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