How much does a 0.20 to 0.49ct D SI1 lab grown princess diamond cost?

As of October 2026, 0.20 to 0.49ct D SI1 lab grown princess diamonds typically cost $120 CAD to $672 CAD, with a median price of $217 CAD. There are currently 9 diamonds matching this specification available across retailers.

Where can I find the best price on a D SI1 princess diamond?

About 54% of these diamonds are available at multiple retailers, with an average price spread of 102%. A comparison tool like Carat Hunter lets you see all the prices side by side.

0.20 to 0.49ct D SI1 Lab Grown Princess

Quick answer

As of October 2026, there are 9 lab grown princess diamonds with D color and SI1 clarity in the 0.20 to 0.49ct range available across retailers worldwide. Prices typically run $120 CAD to $672 CAD, with a median of $217 CAD. At least 20 retailers stock this exact specification, and 54% of the stones appear at more than one of them, with an average price spread of 102%. Half of all listings fall between $587 CAD and $1,538 CAD per carat. The same specification in natural form lists at a median of about $1,739 CAD per carat. Over the last 30 days the median price moved +2.1% and the number of listings moved +9.5%.

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. Princess lab grown stones in the index: 461 USD per carat, -4.8% 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

$118 CAD

Highest Price

$1,097 CAD

Average Price

$319 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

53.9%

Price Spread

102.3%

30-Day Price Trend

+2.1%

30-Day Supply Change

+9.5%

Volatility (30d)

0.03

Price Range

Price per carat distribution across retailers

$664/ct

10th Percentile

$309

Median

$664

90th Percentile

$1,664

Score Distribution

20 diamonds scored across 4 quality tiers

Excellent

6 (30.0%)

Very Good

7 (35.0%)

Good

5 (25.0%)

Average

2 (10.0%)

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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