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Cushion|Lab Grown|IGI

1.03ct E SI1 Cushion Lab Grown Diamond

ID • E/SI1 • IGI LG818673728

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG818673728

Diamond specifications and retailer prices

From £108 GBP
As of November 6, 2026
Save £915 GBP (89%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: £1,023 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 LG818673728 or 818673728. Listed at 14 retailers as of November 2, 2026, with prices from £108 to £1,023, a £915 spread on the same certified stone. MOH London lists it at £1,023. 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 angle35.3°
Pavilion angle37.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG818673728
Dimensions6.61 × 5.18 × 3.63 mm
L/W Ratio1.28
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.61 mm5.18 mm1.03 ctE / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG818673728
Side View
Table 59.0%Crown 35.3°Girdle: MED-THKPavilion 37.1°Culet: NoneDepth 70.1%

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 6
Current: £1,023 GBP|Low: £108 GBP|High: £1,048 GBP|Avg: £373 GBP|-2.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
November 6, 2026
Retailer 8£108 GBP
Retailer 9£154 GBP
Retailer 14£163 GBP
Retailer 13£198 GBP
Retailer 2£214 GBP
Retailer 7£220 GBP
Retailer 3£227 GBP
Retailer 4£308 GBP
Retailer 12£332 GBP
Retailer 6£370 GBP
Retailer 5£374 GBP
Retailer 10£427 GBP
Retailer 11£722 GBP
MOH London£1,023 GBP

43 data points across 14 retailers

14 retailers£108 GBP to £1,023 GBP

A
Cheapest Retailer
-
£108 GBP
Final sale: no returns
A
Retailer 2
-
£154 GBP
View
B+
Retailer 3
-
£163 GBP
View
A
Retailer 4
-
£198 GBP
View
A
Retailer 5
-
£214 GBP
View
A
Retailer 6
-
£220 GBP
View
A
Retailer 7
-
£227 GBP
View
A
Retailer 8
-
£308 GBP
View
B+
Retailer 9
-
£332 GBP
View
B+
Retailer 10
-
£370 GBP
View
B+
Retailer 11
-
£374 GBP
View
B+
Retailer 12
-
£427 GBP
View
B
Retailer 13
-
£722 GBP
View
Most Expensive
B
MOH London
LG818673728 · Nov 2
£1,023 GBP
View
13 more retailers have this diamond
Prices start from £108 GBPSave up to £915 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
£108 GBP