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Cushion|Lab Grown|IGI

3.51ct G VS2 Cushion Lab Grown Diamond

EX • G/VS2 • IGI LG645459123

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG645459123

Diamond specifications and retailer prices

From £535 GBP
$717 USD
As of November 1, 2026
Save £3,711 GBP (87%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,247 GBP at Do Amore Diamonds · As of November 1, 2026
View at Do Amore Diamonds

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded G colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG645459123 or 645459123. Listed at 13 retailers as of November 1, 2026, with prices from £535 to £4,247, a £3,711 spread on the same certified stone. Do Amore Diamonds lists it at £4,247. 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
G
Colour
VS2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.8°
Pavilion angle35.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG645459123
Dimensions8.89 × 8.51 × 5.50 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
8.89 mm8.51 mm3.51 ctG / VS2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG645459123
Side View
Table 62.0%Crown 39.8°Girdle: STK-VTKPavilion 35.7°Culet: NoneDepth 64.6%

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 1
Current: £4,247 GBP|Low: £535 GBP|High: £4,247 GBP|Avg: £1,580 GBP
Do Amore Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 10£535 GBP
Retailer 7£627 GBP
Retailer 8£743 GBP
Retailer 4£766 GBP
Retailer 12£852 GBP
Retailer 2£973 GBP
Retailer 9£1,890 GBP
Retailer 3£1,899 GBP
Retailer 11£1,924 GBP
Retailer 5£2,403 GBP
Retailer 6£2,575 GBP
Do Amore Diamonds£4,247 GBP

42 data points across 12 retailers

13 retailers£535 GBP to £4,247 GBP

A
Cheapest Retailer
-
£535 GBP
$717 USD
Final sale: no returns
A
Retailer 2
-
£627 GBP
$840 USD
View
A
Retailer 3
-
£673 GBP
$902 USD
View
B+
Retailer 4
-
£766 GBP
$1,026 USD
View
A
Retailer 5
-
£852 GBP
$1,142 USD
View
A
Retailer 6
-
£973 GBP
View
B
Retailer 7
-
£1,890 GBP
$2,532 USD
View
B
Retailer 8
-
£1,899 GBP
View
B
Retailer 9
-
£1,924 GBP
$2,578 USD
View
B
Retailer 10
-
£2,191 GBP
$2,936 USD
View
B
Retailer 11
-
£2,403 GBP
View
B
Retailer 12
-
£2,575 GBP
$3,450 USD
View
Most Expensive
B
Do Amore Diamonds
27-0EB6B45EE · Nov 1
£4,247 GBP
$5,690 USD
View
12 more retailers have this diamond
Prices start from £535 GBPSave up to £3,711 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
3.51ct Cushion
£535 GBP