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Cushion|Lab Grown|IGI

1.01ct E SI1 Cushion Lab Grown Diamond

EX • E/SI1 • IGI LG677514326

Shape and cutting style on the report: Cushion modified brilliant

Certificate IGI LG677514326

Diamond specifications and retailer prices

From £118 GBP
$158 USD
As of October 30, 2026
Save £509 GBP (81%) vs most expensive(unlock to see where)
10 retailers carry this diamond
Most expensive: £627 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.01ct lab-grown cushion diamond

This 1.01ct 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 LG677514326 or 677514326. Listed at 10 retailers as of October 29, 2026, with prices from £118 to £627, a £509 spread on the same certified stone. MOH London lists it at £627. 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

1.01
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle31.2°
Pavilion angle40.8°
OriginLab Grown
Grading LabIGI
CertificateIGI LG677514326
Dimensions6.89 × 5.51 × 3.65 mm
L/W Ratio1.25
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.89 mm5.51 mm1.01 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG677514326
Side View
Table 62.0%Crown 31.2°Girdle: MED-VTKPavilion 40.8°Culet: NoneDepth 66.2%

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: Oct 30
Current: £627 GBP|Low: £118 GBP|High: £627 GBP|Avg: £280 GBP|+1.7%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
October 31, 2026
Retailer 10£118 GBP
Retailer 8£133 GBP
Retailer 9£216 GBP
Retailer 2£224 GBP
Retailer 4£245 GBP
Retailer 5£250 GBP
Retailer 7£252 GBP
Retailer 3£314 GBP
Retailer 6£465 GBP
MOH London£627 GBP

43 data points across 10 retailers

10 retailers£118 GBP to £627 GBP

A
Cheapest Retailer
-
£118 GBP
$158 USD
Final sale: no returns
A
Retailer 2
-
£133 GBP
$178 USD
View
A
Retailer 3
-
£216 GBP
$290 USD
View
A
Retailer 4
-
£224 GBP
View
A
Retailer 5
-
£245 GBP
$328 USD
View
A
Retailer 6
-
£250 GBP
View
A
Retailer 7
-
£252 GBP
€322 EUR
View
B+
Retailer 8
-
£314 GBP
$421 USD
View
B+
Retailer 9
-
£465 GBP
$623 USD
View
Most Expensive
B
MOH London
LG677514326 · Oct 29
£627 GBP
View
9 more retailers have this diamond
Prices start from £118 GBPSave up to £509 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
1.01ct Cushion
£118 GBP