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Cushion|Lab Grown|IGI

3.51ct E IF Cushion Lab Grown Diamond

ID • E/IF • IGI LG668432744

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG668432744

Diamond specifications and retailer prices

From £6,142 GBP
$8,230 USD
As of October 29, 2026
2 retailers carry this diamond
Most expensive: £7,289 GBP at Novita Diamonds · As of July 4, 2026
View at Novita Diamonds

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded E colour (colourless) and IF clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG668432744 or 668432744. Listed at 2 retailers as of October 29, 2026. 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

3.51
Carat
E
Colour
IF
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.1°
Pavilion angle35.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668432744
Dimensions10.29 × 8.12 × 5.39 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
10.29 mm8.12 mm3.51 ctE / IF
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668432744
Side View
Table 58.0%Crown 36.1°Girdle: MED-THKPavilion 35.1°Culet: NoneDepth 66.4%

Caratlytics Score

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B+
Very Good
Strong quality and value balance
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Price History

Last verified: Oct 29
Current: £7,289 GBP|Low: £1,646 GBP|High: £16,307 GBP|Avg: £5,784 GBP|-4.4%
Novita Diamonds
Retailer 2
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July 17, 2026
Retailer 11£1,646 GBP
Retailer 2£2,508 GBP
Retailer 7£2,929 GBP
Retailer 6£3,277 GBP
Retailer 12£3,330 GBP
Retailer 14£3,749 GBP
Retailer 9£4,141 GBP
Retailer 15£4,148 GBP
Retailer 4£4,246 GBP
Retailer 3£4,550 GBP
Retailer 10£6,142 GBP
Retailer 16£6,616 GBP
Retailer 13£6,895 GBP
Novita Diamonds£7,289 GBP
Retailer 5£9,179 GBP
Retailer 8£14,165 GBP

67 data points across 16 retailers

2 retailers

B+
Cheapest Retailer
-
£6,142 GBP
$8,230 USD
Most Expensive
Novita Diamonds
cert_668432744 · Jul 4
£7,289 GBP
A$15,026 AUD
View
Price last confirmed 118 days ago
1 more retailer has this diamond
Prices start from £6,142 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.

B+
3.51ct Cushion
£6,142 GBP