How much does a 3.00 to 4.99ct E SI1 lab grown radiant diamond cost?

As of September 2026, 3.00 to 4.99ct E SI1 lab grown radiant diamonds typically cost $790 CAD to $7,713 CAD, with a median price of $4,222 CAD. There are currently 216 diamonds matching this specification available across retailers.

Where can I find the best price on a E SI1 radiant diamond?

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

3.00 to 4.99ct E SI1 Lab Grown Radiant

Quick answer

As of September 2026, there are 216 lab grown radiant diamonds with E color and SI1 clarity in the 3.00 to 4.99ct range available across retailers worldwide. Prices typically run $790 CAD to $7,713 CAD, with a median of $4,222 CAD. At least 24 retailers stock this exact specification. Half of all listings fall between $333 CAD and $1,506 CAD per carat. The same specification in natural form lists at a median of about $22,692 CAD per carat.

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

Caratlytics Diamond Price Index, August 2026: natural diamonds at 2,184 USD per carat and lab-grown at 464 USD per carat, a natural to lab ratio of 4.7 to 1. Radiant lab grown stones in the index: 473 USD per carat, -12.5% month on month. See the full index release

Figures come from live listings across more than 100 retailers and refresh daily. The index is a monthly release.

Last updated: September 2026

Available

216

Lowest Price

$335 CAD

Highest Price

$128,311 CAD

Average Price

$4,286 CAD

Market Intelligence

Retailers Selling

Price Spread

220.4%

Price Range

Price per carat distribution across retailers

$384/ct

10th Percentile

$196

Median

$384

90th Percentile

$1,556

Score Distribution

216 diamonds scored across 4 quality tiers

Excellent

41 (19.0%)

Very Good

36 (16.7%)

Good

27 (12.5%)

Average

112 (51.9%)

Find Your Diamond

Search 216 E SI1 radiant diamonds and compare prices.

Search Diamonds

Consider Instead

Save money without compromising on what matters. These alternatives are visually similar but cost less.

E SI2SI2 inclusions are not visible without magnification

Save 4%

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