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Cushion|Lab Grown|IGI

4.21ct D FL Cushion Lab Grown Diamond

VG • D/FL • IGI LG784642485

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG784642485

Diamond specifications and retailer prices

From $5,727 CAD
$4,100 USD
As of October 29, 2026
Save $29,782 CAD (84%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $35,509 CAD at Do Amore Diamonds · As of October 30, 2026
View at Do Amore Diamonds

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 very-good cut grade and certified by IGI LG784642485 or 784642485. Listed at 11 retailers as of October 29, 2026, with prices from $5,727 to $35,509, a $29,782 spread on the same certified stone. Do Amore Diamonds lists it at $35,509. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

4.21
Carat
D
Color
FL
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.2°
Pavilion angle39°
OriginLab Grown
Grading LabIGI
CertificateIGI LG784642485
Dimensions9.24 × 9.21 × 6.34 mm
L/W Ratio1.00
Girdle conditionFaceted
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
Top View
9.24 mm9.21 mm4.21 ctD / FL
OriginLab Grown
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG784642485
Side View
Table 61.0%Crown 37.2°Girdle: STK-THKPavilion 39°Culet: NoneDepth 68.8%

Caratlytics Score

How it works →
A
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: $35,509 CAD|Low: $5,727 CAD|High: $45,497 CAD|Avg: $15,164 CAD|-22.0%
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 30, 2026
Retailer 8$5,727 CAD
Retailer 5$6,202 CAD
Retailer 3$6,491 CAD
Retailer 10$7,859 CAD
Retailer 7$9,347 CAD
Retailer 9$11,399 CAD
Retailer 4$11,411 CAD
Retailer 6$14,233 CAD
Retailer 2$18,230 CAD
Do Amore Diamonds$35,509 CAD

27 data points across 10 retailers

11 retailers$5,727 CAD to $35,509 CAD

A
Cheapest Retailer
-
$5,727 CAD
$4,100 USD
A
Retailer 2
-
$6,202 CAD
$4,440 USD
View
A
Retailer 3
-
$6,491 CAD
$4,647 USD
View
A
Retailer 4
-
$7,859 CAD
$5,626 USD
View
Final sale: no returns
A
Retailer 5
-
$9,347 CAD
$6,691 USD
View
Retailer 6
-
$11,399 CAD
$8,160 USD
View
Price last confirmed 11 days ago
A
Retailer 7
-
$11,411 CAD
€7,780 EUR
View
B+
Retailer 8
-
$14,233 CAD
£8,023 GBP
View
B+
Retailer 9
-
$18,230 CAD
$13,050 USD
View
B
Retailer 10
-
$27,970 CAD
$20,023 USD
View
Most Expensive
B
Do Amore Diamonds
27-36DC3358C · Oct 30
$35,509 CAD
$25,420 USD
View
10 more retailers have this diamond
Prices start from $5,727 CADSave up to $29,782 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.

A
4.21ct Cushion
$5,727 CAD