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Cushion|Lab Grown|IGI

4.51ct F VS2 Cushion Lab Grown Diamond

ID • F/VS2 • IGI LG846639641

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG846639641

Diamond specifications and retailer prices

From $926 AUD
£511 GBP
As of November 2, 2026
Save $3,735 AUD (80%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: $4,661 AUD at MOH London · As of November 1, 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 LG846639641 or 846639641. Listed at 8 retailers as of November 1, 2026, with prices from $926 to $4,661, a $3,735 spread on the same certified stone. MOH London lists it at $4,661. 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
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG846639641
Dimensions11.60 × 8.30 × 5.60 mm
L/W Ratio1.40
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
11.60 mm8.30 mm4.51 ctF / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG846639641
Side View
Table 63.0%Crown 34.5°Girdle: STK-THKPavilion 35.1°Culet: NoneDepth 67.5%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $4,661 AUD|Low: $926 AUD|High: $4,684 AUD|Avg: $2,278 AUD|-0.5%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 2$926 AUD
Retailer 5$969 AUD
Retailer 4$1,256 AUD
Retailer 8$1,645 AUD
Retailer 3$1,680 AUD
Retailer 7$2,507 AUD
Retailer 6$3,425 AUD
MOH London$4,661 AUD

8 data points across 8 retailers

8 retailers$926 AUD to $4,661 AUD

A
Cheapest Retailer
-
$926 AUD
£511 GBP
A
Retailer 2
-
$969 AUD
$679 USD
View
Final sale: no returns
A
Retailer 3
-
$1,256 AUD
$880 USD
View
B+
Retailer 4
-
$1,645 AUD
$1,153 USD
View
A
Retailer 5
-
$1,680 AUD
£927 GBP
View
A
Retailer 6
-
$2,507 AUD
$1,757 USD
View
B+
Retailer 7
-
$3,425 AUD
$2,400 USD
View
Most Expensive
B
MOH London
LG846639641 · Nov 1
$4,661 AUD
£2,572 GBP
View
7 more retailers have this diamond
Prices start from $926 AUDSave up to $3,735 AUD

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
$926 AUD