How much does a 5.00ct+ E SI2 lab grown radiant diamond cost?

As of October 2026, 5.00ct+ E SI2 lab grown radiant diamonds typically cost $1,499 CAD to $2,826 CAD, with a median price of $1,881 CAD. There are currently 3 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI2 radiant diamond?

About 50% of these diamonds are available at multiple retailers, with an average price spread of 129%. A comparison tool like Carat Hunter lets you see all the prices side by side.

5.00ct+ E SI2 Lab Grown Radiant

Quick answer

As of October 2026, there are 3 lab grown radiant diamonds with E color and SI2 clarity in the 5.00ct+ range available across retailers worldwide. Prices typically run $1,499 CAD to $2,826 CAD, with a median of $1,881 CAD. At least 20 retailers stock this exact specification, and 50% of the stones appear at more than one of them, with an average price spread of 129%. Half of all listings fall between $363 CAD and $985 CAD per carat. Over the last 30 days the median price moved -5.4% and the number of listings moved +68.4%.

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

Lowest Price

$1,307 CAD

Highest Price

$9,951 CAD

Average Price

$2,116 CAD

Market Intelligence

Retailers Selling

Cross Retailer %

50.0%

Price Spread

128.5%

30-Day Price Trend

-5.4%

30-Day Supply Change

+68.4%

Volatility (30d)

0.07

Price Range

Price per carat distribution across retailers

$346/ct

10th Percentile

$179

Median

$346

90th Percentile

$1,177

Score Distribution

5 diamonds scored across 4 quality tiers

Excellent

2 (40.0%)

Very Good

1 (20.0%)

Good

1 (20.0%)

Average

1 (20.0%)

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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