Radiant|Lab Grown|IGI

5.28ct D FL Radiant Lab Grown Diamond

ID • D/FL • IGI LG780661346

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

Certificate IGI LG780661346

Diamond specifications and retailer prices

From $12,157 CAD

$8,686 USD

As of October 27, 2026

Save $28,641 CAD (70%) vs most expensive(unlock to see where)

15 retailers carry this diamond

Most expensive: $40,798 CAD at Brilliant Earth · As of October 29, 2026

View at Brilliant Earth

About this 5.28ct lab-grown radiant diamond

This 5.28ct lab-grown radiant sits in the over five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG780661346 or 780661346. Listed at 15 retailers as of October 27, 2026, with prices from $12,157 to $40,798, a $28,641 spread on the same certified stone. Brilliant Earth lists it at $40,798. Lab-grown prices in the 2ct and up range have fallen 40 to 60% over the last 18 months. Use the cross-retailer spread above to find the lowest current listing.

The 4Cs

5.28

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.9°

Pavilion angle33.1°

OriginLab Grown

Grading LabIGI

CertificateIGI LG780661346

Dimensions12.25 × 8.73 × 5.59 mm

L/W Ratio1.40

Culet sizePointed

Cert comments

As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II

View IGI Report →View Loupe360 Video →

Top View

OriginLab Grown

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG780661346

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 27

Current: $40,798 CAD|Low: $12,157 CAD|High: $84,956 CAD|Avg: $25,762 CAD|-3.0%

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

Retailer 15

October 29, 2026

Retailer 9$12,157 CAD

Retailer 6$12,247 CAD

Retailer 11$12,344 CAD

Retailer 3$12,643 CAD

Retailer 14$13,968 CAD

Retailer 12$15,687 CAD

Retailer 10$16,315 CAD

Retailer 8$16,858 CAD

Retailer 15$17,506 CAD

Retailer 7$17,559 CAD

Retailer 5$27,419 CAD

Retailer 2$27,933 CAD

Retailer 4$39,269 CAD

Brilliant Earth$40,798 CAD

Retailer 13$75,858 CAD

38 data points across 15 retailers

15 retailers$12,157 CAD to $40,798 CAD

Cheapest Retailer

$12,157 CAD

$8,686 USD

Retailer 2

$12,247 CAD

$8,750 USD

View

Retailer 3

$12,344 CAD

$8,820 USD

View

Retailer 4

$12,643 CAD

$9,033 USD

View

Retailer 5

$13,968 CAD

$9,980 USD

View

Retailer 6

$15,687 CAD

$11,208 USD

View

Retailer 7

$16,315 CAD

$11,657 USD

View

Retailer 8

$16,858 CAD

$12,045 USD

View

Retailer 9

$17,506 CAD

$12,508 USD

View

Retailer 10

$17,559 CAD

$12,546 USD

View

Final sale: no returns

B+

Retailer 11

$27,419 CAD

€18,658 EUR

View

B+

Retailer 12

$27,933 CAD

£15,715 GBP

View

B+

Retailer 13

$39,269 CAD

$28,057 USD

View

Most Expensive

Brilliant Earth

18350423Y · Oct 29

$40,798 CAD

$29,150 USD

View

13 more retailers have this diamond

Prices start from $12,157 CADSave up to $28,641 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.

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