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Cushion|Lab Grown|IGI

1.02ct E SI2 Cushion Lab Grown Diamond

ID • E/SI2 • IGI LG831680778

Shape and cutting style on the report: Square cushion modified brilliant

Certificate IGI LG831680778

Diamond specifications and retailer prices

From £191 GBP
As of November 4, 2026
Save £463 GBP (71%) vs most expensive(unlock to see where)
5 retailers carry this diamond
Most expensive: £654 GBP at MOH London · As of November 4, 2026
View at MOH London

About this 1.02ct lab-grown cushion diamond

This 1.02ct lab-grown cushion sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG831680778 or 831680778. Listed at 5 retailers as of November 4, 2026, with prices from £191 to £654, a £463 spread on the same certified stone. MOH London lists it at £654. 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

1.02
Carat
E
Colour
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35.1°
Pavilion angle38.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG831680778
Dimensions5.90 × 5.78 × 3.78 mm
L/W Ratio1.02
Girdle conditionFaceted
Cert comments
As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
5.90 mm5.78 mm1.02 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG831680778
Side View
Table 68.0%Crown 35.1°Girdle: MED-THKPavilion 38.8°Culet: NoneDepth 65.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 4
Current: £654 GBP|Low: £191 GBP|High: £655 GBP|Avg: £294 GBP|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
November 4, 2026
Retailer 5£191 GBP
Retailer 4£200 GBP
Retailer 2£241 GBP
Retailer 3£266 GBP
MOH London£654 GBP

6 data points across 5 retailers

5 retailers£191 GBP to £654 GBP

B+
Cheapest Retailer
-
£191 GBP
A
Retailer 2
-
£200 GBP
View
A
Retailer 3
-
£241 GBP
View
A
Retailer 4
-
£266 GBP
View
Most Expensive
B
MOH London
LG831680778 · Nov 4
£654 GBP
View
4 more retailers have this diamond
Prices start from £191 GBPSave up to £463 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
1.02ct Cushion
£191 GBP