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Cushion|Lab Grown|IGI

3.51ct H VS2 Cushion Lab Grown Diamond

ID • H/VS2 • IGI LG526268209

Shape and cutting style on the report: Square cushion brilliant

Certificate IGI LG526268209

Diamond specifications and retailer prices

From £1,739 GBP
$2,330 USD
As of October 31, 2026
Save £6,968 GBP (80%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: £11,681 GBP at Flawless Fine Jewelry · As of October 31, 2026
View at Flawless Fine Jewelry

About this 3.51ct lab-grown cushion diamond

This 3.51ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and VS2 clarity (very-slightly-included), with a top-tier cut grade and certified by IGI LG526268209 or 526268209. Listed at 6 retailers as of October 31, 2026, with a 401% 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

3.51
Carat
H
Colour
VS2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.1°
Pavilion angle33.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG526268209
Dimensions8.77 × 8.33 × 5.38 mm
L/W Ratio1.05
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
8.77 mm8.33 mm3.51 ctH / VS2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG526268209
Side View
Table 64.5%Crown 34.1°Girdle: STK-VTKPavilion 33.7°Culet: NoneDepth 64.6%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: £11,681 GBP|Low: £1,739 GBP|High: £14,729 GBP|Avg: £8,493 GBP
Flawless Fine Jewelry
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
November 1, 2026
Retailer 3£1,739 GBP
Retailer 8£5,583 GBP
Retailer 6£7,872 GBP
Retailer 4£8,154 GBP
Retailer 7£8,192 GBP
Retailer 5£8,707 GBP
Retailer 9£10,505 GBP
Flawless Fine Jewelry£11,681 GBP
Retailer 2£14,554 GBP

13 data points across 9 retailers

6 retailers£1,739 GBP to £8,707 GBP

B+
Cheapest Retailer
-
£1,739 GBP
$2,330 USD
B
Retailer 2
-
£7,872 GBP
$10,548 USD
View
Final sale: no returns
Retailer 3
-
£8,154 GBP
$10,925 USD
View
Price last confirmed 16 days ago
B
Retailer 4
-
£8,707 GBP
$11,666 USD
View
Most Expensive
Flawless Fine Jewelry
8C41B3EEA · Oct 31
£11,681 GBP
View
Price under review
4 more retailers have this diamond
Prices start from £1,739 GBPSave up to £6,968 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
£1,739 GBP