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Cushion|Lab Grown|IGI

4.51ct F VVS2 Cushion Lab Grown Diamond

EX • F/VVS2 • IGI LG782668976

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

Certificate IGI LG782668976

Diamond specifications and retailer prices

From $707 USD
£557 GBP
As of November 2, 2026
Save $2,739 USD (79%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $7,290 USD at Queensmith · As of October 10, 2026
View at Queensmith

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 VVS2 clarity (very-very-slightly-included), with a top-tier cut grade and certified by IGI LG782668976 or 782668976. Listed at 19 retailers as of October 31, 2026, with a 388% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
VVS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle37.6°
Pavilion angle34.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG782668976
Dimensions9.38 × 9.00 × 6.07 mm
L/W Ratio1.04
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.38 mm9.00 mm4.51 ctF / VVS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG782668976
Side View
Table 60.0%Crown 37.6°Girdle: STK-VTKPavilion 34.4°Culet: NoneDepth 67.4%

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: $1,268 USD|Low: $707 USD|High: $3,489 USD|Avg: $1,786 USD|+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
November 3, 2026
Retailer 7$707 USD
Retailer 5$764 USD
Retailer 2$792 USD
Retailer 12$970 USD
Retailer 13$1,132 USD
Retailer 1$1,268 USD
Retailer 9$1,282 USD
Retailer 6$1,685 USD
Retailer 11$1,697 USD
Retailer 3$2,607 USD
Retailer 4$2,701 USD
Retailer 8$3,336 USD
Retailer 10$3,446 USD

37 data points across 13 retailers

19 retailers$707 USD to $3,446 USD

A
Cheapest Retailer
-
$707 USD
£557 GBP
A
Retailer 2
-
$764 USD
View
Final sale: no returns
Retailer 3
-
$792 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
$970 USD
View
B+
Retailer 5
-
$1,132 USD
View
A
Retailer 6
-
$1,229 USD
View
A
Retailer 7
-
$1,268 USD
£999 GBP
View
A
Retailer 8
-
$1,282 USD
€1,221 EUR
View
A
Retailer 9
-
$1,685 USD
ZAR 27,224 ZAR
View
A
Retailer 10
-
$1,697 USD
A$2,611 AUD
View
A
Retailer 11
-
$1,871 USD
View
B+
Retailer 12
-
$2,469 USD
£1,944 GBP
View
B+
Retailer 13
-
$2,607 USD
View
B+
Retailer 14
-
$2,701 USD
View
B+
Retailer 15
-
$2,732 USD
View
B+
Retailer 16
-
$3,336 USD
£2,627 GBP
View
B+
Retailer 17
-
$3,446 USD
A$5,302 AUD
View
Retailer 18
-
$3,805 USD
View
Price last confirmed 15 days ago
Most Expensive
Queensmith
LG782668976 · Oct 10
$7,290 USD
£5,740 GBP
View
Price last confirmed 23 days ago
18 more retailers have this diamond
Prices start from $707 USDSave up to $2,739 USD

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
$707 USD