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Cushion|Lab Grown|IGI

1.03ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG668410063

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG668410063

Diamond specifications and retailer prices

From £120 GBP
As of November 6, 2026
Save £507 GBP (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £626 GBP at MOH London · As of November 2, 2026
View at MOH London

About this 1.03ct lab-grown cushion diamond

This 1.03ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG668410063 or 668410063. Listed at 12 retailers as of November 2, 2026, with prices from £120 to £626, a £507 spread on the same certified stone. MOH London lists it at £626. 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

1.03
Carat
E
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.9°
Pavilion angle41.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG668410063
Dimensions6.83 × 5.36 × 3.58 mm
L/W Ratio1.27
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.83 mm5.36 mm1.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG668410063
Side View
Table 62.0%Crown 34.9°Girdle: MED-THKPavilion 41.4°Culet: NoneDepth 66.8%

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 6
Current: £626 GBP|Low: £132 GBP|High: £637 GBP|Avg: £284 GBP|-0.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 6, 2026
Retailer 11£135 GBP
Retailer 4£173 GBP
Retailer 6£223 GBP
Retailer 5£229 GBP
Retailer 9£249 GBP
Retailer 2£253 GBP
Retailer 10£254 GBP
Retailer 7£318 GBP
Retailer 3£366 GBP
Retailer 8£374 GBP
MOH London£626 GBP

38 data points across 11 retailers

12 retailers£120 GBP to £626 GBP

A
Cheapest Retailer
-
£120 GBP
Final sale: no returns
Retailer 2
-
£135 GBP
View
Price last confirmed 13 days ago
A
Retailer 3
-
£173 GBP
View
A
Retailer 4
-
£223 GBP
View
A
Retailer 5
-
£229 GBP
View
A
Retailer 6
-
£249 GBP
View
A
Retailer 7
-
£253 GBP
View
A
Retailer 8
-
£254 GBP
View
A
Retailer 9
-
£318 GBP
View
B+
Retailer 10
-
£366 GBP
View
B+
Retailer 11
-
£374 GBP
View
Most Expensive
B
MOH London
LG668410063 · Nov 2
£626 GBP
View
11 more retailers have this diamond
Prices start from £120 GBPSave up to £507 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
1.03ct Cushion
£120 GBP