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Cushion|Lab Grown|IGI

3.50ct H SI1 Cushion Lab Grown Diamond

ID • H/SI1 • IGI LG522237367

Shape and cutting style on the report: Cushion brilliant

Certificate IGI LG522237367

Diamond specifications and retailer prices

From £1,733 GBP
As of November 6, 2026
Save £7,527 GBP (81%) vs most expensive(unlock to see where)
7 retailers carry this diamond
Most expensive: £13,217 GBP at MOH London · As of November 5, 2026
View at MOH London

About this 3.5ct lab-grown cushion diamond

This 3.5ct lab-grown cushion sits in the three to five carat band, graded H colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG522237367 or 522237367. Listed at 7 retailers as of November 6, 2026, with a 434% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

3.50
Carat
H
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.3°
Pavilion angle32.5°
OriginLab Grown
Grading LabIGI
CertificateIGI LG522237367
Dimensions8.92 × 8.18 × 5.30 mm
L/W Ratio1.09
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
8.92 mm8.18 mm3.50 ctH / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG522237367
Side View
Table 61.0%Crown 36.3°Girdle: THK-VTKPavilion 32.5°Culet: NoneDepth 64.8%

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: Nov 6
Current: £13,217 GBP|Low: £1,733 GBP|High: £13,431 GBP|Avg: £7,801 GBP|-1.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 3£1,733 GBP
Retailer 10£6,090 GBP
Retailer 6£7,028 GBP
Retailer 7£7,217 GBP
Retailer 5£7,279 GBP
Retailer 8£7,444 GBP
Retailer 4£8,422 GBP
Retailer 2£9,260 GBP
Retailer 9£9,378 GBP
MOH London£13,217 GBP

39 data points across 10 retailers

7 retailers£1,733 GBP to £9,260 GBP

B+
Cheapest Retailer
-
£1,733 GBP
B
Retailer 2
-
£7,028 GBP
View
Final sale: no returns
B
Retailer 3
-
£7,217 GBP
View
Retailer 4
-
£7,279 GBP
View
Price last confirmed 26 days ago
B
Retailer 5
-
£8,422 GBP
View
B
Retailer 6
-
£9,260 GBP
View
Most Expensive
MOH London
LG522237367 · Nov 5
£13,217 GBP
View
Price under review
6 more retailers have this diamond
Prices start from £1,733 GBPSave up to £7,527 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+
3.50ct Cushion
£1,733 GBP