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Cushion|Lab Grown|IGI

4.51ct F VS2 Cushion Lab Grown Diamond

EX • F/VS2 • IGI LG821640786

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

Certificate IGI LG821640786

Diamond specifications and retailer prices

From $1,664 CAD
$1,191 USD
As of October 30, 2026
Save $2,640 CAD (61%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: $4,304 CAD at MOH London · As of October 29, 2026
View at MOH London

About this 4.51ct lab-grown cushion diamond

This 4.51ct lab-grown cushion sits in the three to five carat band, graded F colour (colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG821640786 or 821640786. Listed at 6 retailers as of October 29, 2026, with prices from $1,664 to $4,304, a $2,640 spread on the same certified stone. MOH London lists it at $4,304. 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

4.51
Carat
F
Color
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.9°
Pavilion angle32.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG821640786
Dimensions9.52 × 9.14 × 5.88 mm
L/W Ratio1.04
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.52 mm9.14 mm4.51 ctF / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG821640786
Side View
Table 57.0%Crown 35.9°Girdle: MED-STKPavilion 32.1°Culet: NoneDepth 64.3%

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 30
Current: $4,304 CAD|Low: $1,629 CAD|High: $4,332 CAD|Avg: $2,559 CAD|+0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
November 1, 2026
Retailer 4$1,664 CAD
Retailer 2$1,689 CAD
Retailer 3$1,766 CAD
Retailer 6$2,463 CAD
Retailer 5$3,509 CAD
MOH London$4,304 CAD

42 data points across 6 retailers

6 retailers$1,664 CAD to $4,304 CAD

B+
Cheapest Retailer
-
$1,664 CAD
$1,191 USD
A
Retailer 2
-
$1,689 CAD
£952 GBP
View
A
Retailer 3
-
$1,766 CAD
€1,204 EUR
View
A
Retailer 4
-
$2,463 CAD
$1,763 USD
View
B+
Retailer 5
-
$3,509 CAD
$2,512 USD
View
Most Expensive
B+
MOH London
LG821640786 · Oct 29
$4,304 CAD
£2,426 GBP
View
5 more retailers have this diamond
Prices start from $1,664 CADSave up to $2,640 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
4.51ct Cushion
$1,664 CAD