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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 £527 GBP
As of November 2, 2026
Save £2,041 GBP (79%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £2,835 GBP 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
Colour
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

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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: £945 GBP|Low: £527 GBP|High: £2,600 GBP|Avg: £1,319 GBP|+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£527 GBP
Retailer 5£569 GBP
Retailer 2£590 GBP
Retailer 12£723 GBP
Retailer 13£844 GBP
Retailer 1£945 GBP
Retailer 9£955 GBP
Retailer 6£1,256 GBP
Retailer 11£1,265 GBP
Retailer 3£1,943 GBP
Retailer 4£2,013 GBP
Retailer 8£2,486 GBP
Retailer 10£2,568 GBP

36 data points across 13 retailers

18 retailers£527 GBP to £2,568 GBP

A
Cheapest Retailer
-
£527 GBP
A
Retailer 2
-
£569 GBP
$764 USD
View
Final sale: no returns
Retailer 3
-
£590 GBP
$792 USD
View
Price last confirmed 17 days ago
A
Retailer 4
-
£723 GBP
$970 USD
View
B+
Retailer 5
-
£844 GBP
$1,132 USD
View
A
Retailer 6
-
£916 GBP
$1,229 USD
View
A
Retailer 7
-
£945 GBP
View
A
Retailer 8
-
£955 GBP
€1,221 EUR
View
A
Retailer 9
-
£1,256 GBP
ZAR 27,224 ZAR
View
A
Retailer 10
-
£1,265 GBP
A$2,611 AUD
View
A
Retailer 11
-
£1,394 GBP
$1,871 USD
View
B+
Retailer 12
-
£1,840 GBP
View
B+
Retailer 13
-
£1,943 GBP
$2,607 USD
View
B+
Retailer 14
-
£2,013 GBP
$2,701 USD
View
B+
Retailer 15
-
£2,036 GBP
$2,732 USD
View
B+
Retailer 16
-
£2,486 GBP
View
B+
Retailer 17
-
£2,568 GBP
A$5,302 AUD
View
Most Expensive
Rare Carat
HS-61-53A_l_779638251 · Oct 19
£2,835 GBP
$3,805 USD
View
Price last confirmed 15 days ago
17 more retailers have this diamond
Prices start from £527 GBPSave up to £2,041 GBP

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
£527 GBP