Cushion|Lab Grown|IGI

4.21ct D FL Cushion Lab Grown Diamond

EX • D/FL • IGI LG804605050

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG804605050

Diamond specifications and retailer prices

From $7,981 CAD

$5,702 USD

As of October 26, 2026

Save $40,416 CAD (84%) vs most expensive(unlock to see where)

21 retailers carry this diamond

Most expensive: $48,397 CAD at With Clarity · As of October 28, 2026

View at With Clarity

About this 4.21ct lab-grown cushion diamond

This 4.21ct lab-grown cushion sits in the three to five carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG804605050 or 804605050. Listed at 21 retailers as of October 26, 2026, with prices from $7,981 to $48,397, a $40,416 spread on the same certified stone. With Clarity lists it at $48,397. 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

4.21

Carat

Color

Clarity

Excellent

Cut

Specifications

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

Crown angle35.5°

Pavilion angle37.5°

OriginLab Grown

Grading LabIGI

CertificateIGI LG804605050

Dimensions10.97 × 8.56 × 5.72 mm

L/W Ratio1.28

Girdle conditionFaceted

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

CutExcellent

PolishExcellent

SymmetryExcellent

FluorescenceNone

CertificateIGI LG804605050

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 26

Current: $12,256 CAD|Low: $7,705 CAD|High: $47,479 CAD|Avg: $18,616 CAD|+0.3%

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

Retailer 14

Retailer 15

Retailer 16

Retailer 17

Retailer 18

With Clarity

October 30, 2026

Retailer 15$7,981 CAD

Retailer 5$8,870 CAD

Retailer 12$9,200 CAD

Retailer 3$9,377 CAD

Retailer 4$9,524 CAD

Retailer 2$9,530 CAD

Retailer 6$9,629 CAD

Retailer 1$12,256 CAD

Retailer 13$15,056 CAD

Retailer 17$16,126 CAD

Retailer 14$19,496 CAD

Retailer 11$20,283 CAD

Retailer 16$21,310 CAD

Retailer 7$24,578 CAD

Retailer 8$25,691 CAD

Retailer 9$26,512 CAD

Retailer 18$30,945 CAD

Retailer 10$33,372 CAD

With Clarity$47,479 CAD

39 data points across 19 retailers

21 retailers$7,981 CAD to $48,397 CAD

Cheapest Retailer

$7,981 CAD

$5,702 USD

Retailer 2

$8,870 CAD

View

Retailer 3

$9,200 CAD

$6,573 USD

View

Final sale: no returns

Retailer 4

$9,377 CAD

$6,700 USD

View

Retailer 5

$9,524 CAD

$6,805 USD

View

Retailer 6

$9,530 CAD

$6,809 USD

View

Price last confirmed 13 days ago

Retailer 7

$9,629 CAD

$6,880 USD

View

Retailer 8

$12,256 CAD

£6,895 GBP

View

B+

Retailer 9

$13,566 CAD

£7,632 GBP

View

B+

Retailer 10

$15,056 CAD

€10,245 EUR

View

B+

Retailer 11

$16,126 CAD

$11,522 USD

View

B+

Retailer 12

$19,496 CAD

£10,968 GBP

View

B+

Retailer 13

$20,283 CAD

ZAR 234,123 ZAR

View

Retailer 14

$21,310 CAD

$15,226 USD

View

Retailer 15

$24,578 CAD

$17,561 USD

View

Retailer 16

$25,691 CAD

$18,356 USD

View

Retailer 17

$26,512 CAD

$18,942 USD

View

Retailer 18

$28,024 CAD

$20,023 USD

View

Retailer 19

$30,945 CAD

$22,110 USD

View

Retailer 20

$33,372 CAD

$23,844 USD

View

Most Expensive

With Clarity

804605050 · Oct 28

$48,397 CAD

$34,579 USD

View

20 more retailers have this diamond

Prices start from $7,981 CADSave up to $40,416 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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