Radiant|Lab Grown|IGI

3.91ct D VS1 Radiant Lab Grown Diamond

ID • D/VS1 • IGI LG728501454

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

Certificate IGI LG728501454

Diamond specifications and retailer prices

From $1,791 CAD

$1,280 USD

As of October 29, 2026

Save $4,204 CAD (70%) vs most expensive(unlock to see where)

16 retailers carry this diamond

Most expensive: $8,425 CAD at Queensmith · As of October 16, 2026

View at Queensmith

About this 3.91ct lab-grown radiant diamond

This 3.91ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and VS1 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG728501454 or 728501454. Listed at 16 retailers as of October 29, 2026, with a 235% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

3.91

Carat

Color

VS1

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle45.7°

Pavilion angle34.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG728501454

Dimensions11.21 × 11.21 × 7.70 mm

L/W Ratio1.00

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

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG728501454

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 29

Current: $4,310 CAD|Low: $1,777 CAD|High: $6,049 CAD|Avg: $3,691 CAD|-0.5%

Retailer 1

Retailer 2

Retailer 3

Retailer 4

Retailer 5

Retailer 6

Retailer 7

Retailer 8

Retailer 9

Retailer 10

Retailer 11

Retailer 12

Retailer 13

October 29, 2026

Retailer 12$1,791 CAD

Retailer 4$1,856 CAD

Retailer 8$2,099 CAD

Retailer 7$2,950 CAD

Retailer 10$3,144 CAD

Retailer 3$3,479 CAD

Retailer 13$3,715 CAD

Retailer 5$3,983 CAD

Retailer 2$4,188 CAD

Retailer 1$4,310 CAD

Retailer 9$5,119 CAD

Retailer 11$5,374 CAD

Retailer 6$5,995 CAD

35 data points across 13 retailers

16 retailers$1,791 CAD to $5,995 CAD

Retailer 1

$1,600 CAD

$1,143 USD

Price last confirmed 8 days ago

Retailer 2

$1,741 CAD

$1,244 USD

View

Price last confirmed 9 days ago

Retailer 3

$1,791 CAD

$1,280 USD

View

Final sale: no returns

Retailer 4

$1,856 CAD

$1,326 USD

View

Price last confirmed 10 days ago

Retailer 5

$2,099 CAD

$1,500 USD

View

B+

Retailer 6

$2,950 CAD

$2,108 USD

View

B+

Retailer 7

$3,144 CAD

$2,246 USD

View

Retailer 8

$3,479 CAD

$2,486 USD

View

Price last confirmed 10 days ago

B+

Retailer 9

$3,715 CAD

$2,654 USD

View

Retailer 10

$3,983 CAD

A$4,378 AUD

View

Price last confirmed 21 days ago

Retailer 11

$4,188 CAD

A$4,604 AUD

View

Price last confirmed 8 days ago

B+

Retailer 12

$4,310 CAD

ZAR 49,753 ZAR

View

Retailer 13

$5,119 CAD

£2,880 GBP

View

Retailer 14

$5,374 CAD

$3,840 USD

View

Retailer 15

$5,995 CAD

£3,373 GBP

View

Most Expensive

Queensmith

LG728501454 · Oct 16

$8,425 CAD

£4,740 GBP

View

Price last confirmed 13 days ago

15 more retailers have this diamond

Prices start from $1,791 CADSave up to $4,204 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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