Radiant|Lab Grown|IGI

4.07ct E SI1 Radiant Lab Grown Diamond

EX • E/SI1 • IGI LG640439977

Shape and cutting style on the report: Cut cornered rectangular modified brilliant

Certificate IGI LG640439977

Diamond specifications and retailer prices

From $596 CAD

£336 GBP

As of October 28, 2026

Save $5,268 CAD (90%) vs most expensive(unlock to see where)

17 retailers carry this diamond

Most expensive: $5,864 CAD at Brilliant Earth · As of October 26, 2026

View at Brilliant Earth

About this 4.07ct lab-grown radiant diamond

This 4.07ct lab-grown radiant sits in the three to five carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG640439977 or 640439977. Listed at 17 retailers as of October 26, 2026, with prices from $596 to $5,864, a $5,268 spread on the same certified stone. Brilliant Earth lists it at $5,864. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

4.07

Carat

Color

SI1

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.3°

Pavilion angle35.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG640439977

Dimensions11.22 × 7.94 × 5.37 mm

L/W Ratio1.41

Culet sizePointed

Cert comments

This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG640439977

Side View

Caratlytics Score

How it works →

Excellent

Excellent quality and great value

Unlock full score analysis

See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 28

Current: $5,864 CAD|Low: $596 CAD|High: $6,396 CAD|Avg: $1,864 CAD|-8.3%

Brilliant Earth

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

Retailer 14

October 28, 2026

Retailer 7$596 CAD

Retailer 3$642 CAD

Retailer 4$701 CAD

Retailer 8$711 CAD

Retailer 13$1,078 CAD

Retailer 14$1,125 CAD

Retailer 2$1,162 CAD

Retailer 12$1,218 CAD

Retailer 5$1,297 CAD

Retailer 6$1,940 CAD

Retailer 10$1,993 CAD

Retailer 9$2,780 CAD

Retailer 11$3,485 CAD

Brilliant Earth$5,864 CAD

36 data points across 14 retailers

17 retailers$596 CAD to $5,864 CAD

Cheapest Retailer

$596 CAD

£336 GBP

Retailer 2

$642 CAD

$459 USD

View

Price last confirmed 32 days ago

Retailer 3

$701 CAD

$501 USD

View

Price last confirmed 32 days ago

Retailer 4

$711 CAD

$508 USD

View

Price last confirmed 17 days ago

Retailer 5

$711 CAD

$508 USD

View

Retailer 6

$1,078 CAD

$770 USD

View

B+

Retailer 7

$1,125 CAD

$804 USD

View

Retailer 8

$1,162 CAD

£653 GBP

View

Retailer 9

$1,218 CAD

€829 EUR

View

Retailer 10

$1,297 CAD

$927 USD

View

B+

Retailer 11

$1,940 CAD

$1,386 USD

View

B+

Retailer 12

$1,993 CAD

$1,424 USD

View

B+

Retailer 13

$2,621 CAD

£1,475 GBP

View

B+

Retailer 14

$2,780 CAD

£1,564 GBP

View

Retailer 15

$3,485 CAD

$2,490 USD

View

Retailer 16

$3,499 CAD

$2,500 USD

View

Price last confirmed 29 days ago

Most Expensive

Brilliant Earth

10979854A · Oct 26

$5,864 CAD

$4,190 USD

View

16 more retailers have this diamond

Prices start from $596 CADSave up to $5,268 CAD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

Similar diamonds

4.07ct Radiant

$596 CAD