Radiant|Lab Grown|IGI

3.11ct D IF Radiant Lab Grown Diamond

ID • D/IF • IGI LG728578054

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

Certificate IGI LG728578054

Diamond specifications and retailer prices

From $1,746 CAD

$1,250 USD

As of October 30, 2026

Save $14,989 CAD (90%) vs most expensive(unlock to see where)

31 retailers carry this diamond

Most expensive: $16,735 CAD at Brilliant Earth · As of October 27, 2026

View at Brilliant Earth

About this 3.11ct lab-grown radiant diamond

This 3.11ct lab-grown radiant sits in the three to five carat band, graded D colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG728578054 or 728578054. Listed at 31 retailers as of October 27, 2026, with prices from $1,746 to $16,735, a $14,989 spread on the same certified stone. Brilliant Earth lists it at $16,735. 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

3.11

Carat

Color

Clarity

Ideal

Cut

Specifications

CutIdeal

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle41.7°

Pavilion angle33.9°

OriginLab Grown

Grading LabIGI

CertificateIGI LG728578054

Dimensions10.21 × 7.36 × 4.85 mm

L/W Ratio1.39

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 LG728578054

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 30

Current: $16,735 CAD|Low: $1,746 CAD|High: $16,735 CAD|Avg: $5,561 CAD

Brilliant Earth

Retailer 2

Retailer 3

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Retailer 8

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Retailer 23

October 31, 2026

Retailer 20$1,746 CAD

Retailer 19$2,225 CAD

Retailer 8$2,326 CAD

Retailer 17$2,357 CAD

Retailer 22$2,467 CAD

Retailer 4$2,848 CAD

Retailer 12$3,327 CAD

Retailer 9$3,533 CAD

Retailer 13$3,776 CAD

Retailer 2$4,273 CAD

Retailer 7$4,704 CAD

Retailer 6$4,896 CAD

Retailer 10$5,017 CAD

Retailer 15$5,735 CAD

Retailer 18$5,814 CAD

Retailer 21$6,349 CAD

Retailer 5$7,107 CAD

Retailer 3$7,125 CAD

Retailer 11$7,164 CAD

Retailer 23$7,735 CAD

Retailer 14$8,060 CAD

Retailer 16$9,658 CAD

Brilliant Earth$16,735 CAD

32 data points across 23 retailers

31 retailers$1,746 CAD to $16,735 CAD

Cheapest Retailer

$1,746 CAD

$1,250 USD

Retailer 2

$1,912 CAD

$1,369 USD

View

Price last confirmed 22 days ago

Retailer 3

$2,055 CAD

$1,471 USD

View

Price last confirmed 30 days ago

Retailer 4

$2,218 CAD

$1,588 USD

View

Price last confirmed 27 days ago

Retailer 5

$2,225 CAD

$1,593 USD

View

Final sale: no returns

Retailer 6

$2,236 CAD

$1,601 USD

View

Price last confirmed 33 days ago

Retailer 7

$2,326 CAD

$1,665 USD

View

Retailer 8

$2,351 CAD

$1,683 USD

View

Price last confirmed 33 days ago

Retailer 9

$2,357 CAD

$1,687 USD

View

Retailer 10

$2,467 CAD

HK$13,800 HKD

View

Retailer 11

$2,848 CAD

£1,605 GBP

View

Retailer 12

$3,327 CAD

$2,382 USD

View

Retailer 13

$3,533 CAD

€2,409 EUR

View

Price last confirmed 7 days ago

Retailer 14

$3,776 CAD

$2,703 USD

View

Retailer 15

$4,157 CAD

$2,976 USD

View

Retailer 16

$4,157 CAD

$2,976 USD

View

Price last confirmed 20 days ago

Retailer 17

$4,273 CAD

$3,059 USD

View

Retailer 18

$4,469 CAD

$3,199 USD

View

Price last confirmed 30 days ago

Retailer 19

$4,704 CAD

ZAR 54,407 ZAR

View

B+

Retailer 20

$4,896 CAD

£2,760 GBP

View

Retailer 21

$5,017 CAD

A$5,525 AUD

View

Price last confirmed 8 days ago

B+

Retailer 22

$5,735 CAD

$4,105 USD

View

B+

Retailer 23

$5,814 CAD

$4,162 USD

View

B+

Retailer 24

$6,349 CAD

$4,545 USD

View

B+

Retailer 25

$7,107 CAD

$5,088 USD

View

B+

Retailer 26

$7,125 CAD

SGD 6,893 SGD

View

B+

Retailer 27

$7,164 CAD

£4,038 GBP

View

B+

Retailer 28

$7,735 CAD

$5,537 USD

View

Retailer 29

$8,060 CAD

$5,770 USD

View

Price last confirmed 25 days ago

Retailer 30

$9,658 CAD

A$10,637 AUD

View

Price last confirmed 29 days ago

Most Expensive

Brilliant Earth

15743649A · Oct 27

$16,735 CAD

$11,980 USD

View

30 more retailers have this diamond

Prices start from $1,746 CADSave up to $14,989 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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