How much does a 0.20 to 0.49ct H SI2 lab grown round diamond cost?

As of October 2026, 0.20 to 0.49ct H SI2 lab grown round diamonds typically cost $379 CAD to $1,041 CAD, with a median price of $499 CAD. There are currently 16 diamonds matching this specification available across retailers.

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

Compare prices across retailers on Carat Hunter to see all your options.

0.20 to 0.49ct H SI2 Lab Grown Round

Quick answer

As of October 2026, there are 16 lab grown round diamonds with H color and SI2 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $379 CAD to $1,041 CAD, with a median of $499 CAD. At least 1 retailers stock this exact specification. Half of all listings fall between $1,421 CAD and $1,434 CAD per carat. The same specification in natural form lists at a median of about $1,688 CAD per carat.

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

Lowest Price

$122 CAD

Highest Price

$1,436 CAD

Average Price

$589 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

0.0%

Price Spread

0.9%

Price Range

Price per carat distribution across retailers

$1,025/ct

10th Percentile

$988

Median

$1,025

90th Percentile

$1,060

Score Distribution

52 diamonds scored across 4 quality tiers

Excellent

2 (3.8%)

Very Good

10 (19.2%)

Good

24 (46.2%)

Average

16 (30.8%)

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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