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Cushion|Lab Grown|IGI

4.51ct F VVS2 Cushion Lab Grown Diamond

ID • F/VVS2 • IGI LG779638251

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG779638251

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)
18 retailers carry this diamond
Most expensive: $3,805 USD at Rare Carat · As of October 19, 2026
View at Rare Carat

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 LG779638251 or 779638251. Listed at 18 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
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle33.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG779638251
Dimensions9.99 × 9.19 × 5.61 mm
L/W Ratio1.09
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
9.99 mm9.19 mm4.51 ctF / VVS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG779638251
Side View
Table 66.0%Crown 33.5°Girdle: STK-THKPavilion 33.2°Culet: NoneDepth 61.0%

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: $1,685 USD|Low: $707 USD|High: $3,489 USD|Avg: $1,770 USD|+2.0%
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 2, 2026
Retailer 6$707 USD
Retailer 5$764 USD
Retailer 2$792 USD
Retailer 12$970 USD
Retailer 13$1,132 USD
Retailer 7$1,268 USD
Retailer 9$1,282 USD
Retailer 1$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

35 data points across 13 retailers

18 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
Most Expensive
Rare Carat
HS-61-53A_l_779638251 · Oct 19
$3,805 USD
View
Price last confirmed 14 days ago
17 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