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Cushion|Lab Grown|IGI

1.02ct D SI1 Cushion Lab Grown Diamond

ID • D/SI1 • IGI LG851654220

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG851654220

Diamond specifications and retailer prices

From £187 GBP
As of November 6, 2026
Save £453 GBP (71%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: £640 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG851654220 or 851654220. Listed at 8 retailers as of November 4, 2026, with prices from £187 to £640, a £453 spread on the same certified stone. MOH London lists it at £640. 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
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle38.3°
Pavilion angle35.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG851654220
Dimensions7.14 × 4.97 × 3.31 mm
L/W Ratio1.44
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
7.14 mm4.97 mm1.02 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG851654220
Side View
Table 62.0%Crown 38.3°Girdle: STK-VTKPavilion 35.8°Culet: NoneDepth 66.6%

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: £640 GBP|Low: £187 GBP|High: £641 GBP|Avg: £325 GBP|-0.3%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
November 6, 2026
Retailer 7£187 GBP
Retailer 2£235 GBP
Retailer 4£238 GBP
Retailer 3£243 GBP
Retailer 5£260 GBP
Retailer 6£482 GBP
MOH London£640 GBP

6 data points across 7 retailers

8 retailers£187 GBP to £640 GBP

B+
Cheapest Retailer
-
£187 GBP
A
Retailer 2
-
£235 GBP
View
A
Retailer 3
-
£238 GBP
View
A
Retailer 4
-
£243 GBP
View
A
Retailer 5
-
£260 GBP
View
B+
Retailer 6
-
£392 GBP
View
B
Retailer 7
-
£482 GBP
View
Most Expensive
B
MOH London
LG851654220 · Nov 4
£640 GBP
View
7 more retailers have this diamond
Prices start from £187 GBPSave up to £453 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
£187 GBP